llui.cpp

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// Utilities functions the user interface needs

//#include "llviewerprecompiledheaders.h"
#include "linden_common.h"

#include <string>
#include <map>

// Linden library includes
#include "audioengine.h"
#include "v2math.h"
#include "v4color.h"
#include "llgl.h"
#include "llrect.h"
#include "llimagegl.h"
//#include "llviewerimage.h"
#include "lldir.h"
#include "llfontgl.h"

// Project includes
//#include "audioengine.h"
#include "llcontrol.h"
//#include "llstartup.h"
#include "llui.h"
#include "llview.h"
#include "llwindow.h"

#include "llglheaders.h"

//
// Globals
//
const LLColor4 UI_VERTEX_COLOR(1.f, 1.f, 1.f, 1.f);

// Used to hide the flashing text cursor when window doesn't have focus.
BOOL gShowTextEditCursor = TRUE;

// Language for UI construction
std::map<LLString, LLString> gTranslation;
std::list<LLString> gUntranslated;

LLControlGroup* LLUI::sConfigGroup = NULL;
LLControlGroup* LLUI::sColorsGroup = NULL;
LLControlGroup* LLUI::sAssetsGroup = NULL;
LLImageProviderInterface* LLUI::sImageProvider = NULL;
LLUIAudioCallback LLUI::sAudioCallback = NULL;
LLVector2               LLUI::sGLScaleFactor(1.f, 1.f);
LLWindow*               LLUI::sWindow = NULL;
LLHtmlHelp*             LLUI::sHtmlHelp = NULL;
BOOL            LLUI::sShowXUINames = FALSE;
std::stack<LLRect> LLUI::sClipRectStack;

//
// Functions
//
void make_ui_sound(const LLString& name)
{
        if (!LLUI::sConfigGroup->controlExists(name))
        {
                llwarns << "tried to make ui sound for unknown sound name: " << name << llendl; 
        }
        else
        {
                LLUUID uuid(LLUI::sConfigGroup->getString(name));               
                if (uuid.isNull())
                {
                        if ("00000000-0000-0000-0000-000000000000" == LLUI::sConfigGroup->getString(name))
                        {
                                if (LLUI::sConfigGroup->getBOOL("UISndDebugSpamToggle"))
                                {
                                        llinfos << "ui sound name: " << name << " triggered but silent (null uuid)" << llendl;  
                                }                               
                        }
                        else
                        {
                                llwarns << "ui sound named: " << name << " does not translate to a valid uuid" << llendl;       
                        }

                }
                else if (LLUI::sAudioCallback != NULL)
                {
                        if (LLUI::sConfigGroup->getBOOL("UISndDebugSpamToggle"))
                        {
                                llinfos << "ui sound name: " << name << llendl; 
                        }
                        LLUI::sAudioCallback(uuid);
                }
        }
}

BOOL ui_point_in_rect(S32 x, S32 y, S32 left, S32 top, S32 right, S32 bottom)
{
        if (x < left || right < x) return FALSE;
        if (y < bottom || top < y) return FALSE;
        return TRUE;
}


// Puts GL into 2D drawing mode by turning off lighting, setting to an
// orthographic projection, etc.
void gl_state_for_2d(S32 width, S32 height)
{
        stop_glerror();
        F32 window_width = (F32) width;//gViewerWindow->getWindowWidth();
        F32 window_height = (F32) height;//gViewerWindow->getWindowHeight();

        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        glOrtho(0.0f, window_width, 0.0f, window_height, -1.0f, 1.0f);
        glMatrixMode(GL_MODELVIEW);
        glLoadIdentity();
        stop_glerror();
}


void gl_draw_x(const LLRect& rect, const LLColor4& color)
{
        LLGLSNoTexture no_texture;

        glColor4fv( color.mV );

        glBegin( GL_LINES );
                glVertex2i( rect.mLeft,         rect.mTop );
                glVertex2i( rect.mRight,        rect.mBottom );
                glVertex2i( rect.mLeft,         rect.mBottom );
                glVertex2i( rect.mRight,        rect.mTop );
        glEnd();
}


void gl_rect_2d_offset_local( S32 left, S32 top, S32 right, S32 bottom, const LLColor4 &color, S32 pixel_offset, BOOL filled)
{
        glColor4fv(color.mV);
        gl_rect_2d_offset_local(left, top, right, bottom, pixel_offset, filled);
}

void gl_rect_2d_offset_local( S32 left, S32 top, S32 right, S32 bottom, S32 pixel_offset, BOOL filled)
{
        glPushMatrix();
        left += LLFontGL::sCurOrigin.mX;
        right += LLFontGL::sCurOrigin.mX;
        bottom += LLFontGL::sCurOrigin.mY;
        top += LLFontGL::sCurOrigin.mY;

        glLoadIdentity();
        gl_rect_2d(llfloor((F32)left * LLUI::sGLScaleFactor.mV[VX]) - pixel_offset,
                                llfloor((F32)top * LLUI::sGLScaleFactor.mV[VY]) + pixel_offset,
                                llfloor((F32)right * LLUI::sGLScaleFactor.mV[VX]) + pixel_offset,
                                llfloor((F32)bottom * LLUI::sGLScaleFactor.mV[VY]) - pixel_offset,
                                filled);
        glPopMatrix();
}


void gl_rect_2d(S32 left, S32 top, S32 right, S32 bottom, BOOL filled )
{
        stop_glerror();
        LLGLSNoTexture no_texture;

        // Counterclockwise quad will face the viewer
        if( filled )
        {
                glBegin( GL_QUADS );
                        glVertex2i(left, top);
                        glVertex2i(left, bottom);
                        glVertex2i(right, bottom);
                        glVertex2i(right, top);
                glEnd();
        }
        else
        {
                if( gGLManager.mATIOffsetVerticalLines )
                {
                        // Work around bug in ATI driver: vertical lines are offset by (-1,-1)
                        glBegin( GL_LINES );

                                // Verticals 
                                glVertex2i(left + 1, top);
                                glVertex2i(left + 1, bottom);

                                glVertex2i(right, bottom);
                                glVertex2i(right, top);

                                // Horizontals
                                top--;
                                right--;
                                glVertex2i(left, bottom);
                                glVertex2i(right, bottom);

                                glVertex2i(left, top);
                                glVertex2i(right, top);
                        glEnd();
                }
                else
                {
                        top--;
                        right--;
                        glBegin( GL_LINE_STRIP );
                                glVertex2i(left, top);
                                glVertex2i(left, bottom);
                                glVertex2i(right, bottom);
                                glVertex2i(right, top);
                                glVertex2i(left, top);
                        glEnd();
                }
        }
        stop_glerror();
}

void gl_rect_2d(S32 left, S32 top, S32 right, S32 bottom, const LLColor4 &color, BOOL filled )
{
        glColor4fv( color.mV );
        gl_rect_2d( left, top, right, bottom, filled );
}


void gl_rect_2d( const LLRect& rect, const LLColor4& color, BOOL filled )
{
        glColor4fv( color.mV );
        gl_rect_2d( rect.mLeft, rect.mTop, rect.mRight, rect.mBottom, filled );
}

// Given a rectangle on the screen, draws a drop shadow _outside_
// the right and bottom edges of it.  Along the right it has width "lines"
// and along the bottom it has height "lines".
void gl_drop_shadow(S32 left, S32 top, S32 right, S32 bottom, const LLColor4 &start_color, S32 lines)
{
        stop_glerror();
        LLGLSNoTexture no_texture;
        
        // HACK: Overlap with the rectangle by a single pixel.
        right--;
        bottom++;
        lines++;

        LLColor4 end_color = start_color;
        end_color.mV[VALPHA] = 0.f;

        glBegin(GL_QUADS);

        // Right edge, CCW faces screen
        glColor4fv(start_color.mV);
        glVertex2i(right,               top-lines);
        glVertex2i(right,               bottom);
        glColor4fv(end_color.mV);
        glVertex2i(right+lines, bottom);
        glVertex2i(right+lines, top-lines);

        // Bottom edge, CCW faces screen
        glColor4fv(start_color.mV);
        glVertex2i(right,               bottom);
        glVertex2i(left+lines,  bottom);
        glColor4fv(end_color.mV);
        glVertex2i(left+lines,  bottom-lines);
        glVertex2i(right,               bottom-lines);

        // bottom left Corner
        glColor4fv(start_color.mV);
        glVertex2i(left+lines,  bottom);
        glColor4fv(end_color.mV);
        glVertex2i(left,                bottom);
        // make the bottom left corner not sharp
        glVertex2i(left+1,              bottom-lines+1);
        glVertex2i(left+lines,  bottom-lines);

        // bottom right corner
        glColor4fv(start_color.mV);
        glVertex2i(right,               bottom);
        glColor4fv(end_color.mV);
        glVertex2i(right,               bottom-lines);
        // make the rightmost corner not sharp
        glVertex2i(right+lines-1,       bottom-lines+1);
        glVertex2i(right+lines, bottom);

        // top right corner
        glColor4fv(start_color.mV);
        glVertex2i( right,                      top-lines );
        glColor4fv(end_color.mV);
        glVertex2i( right+lines,        top-lines );
        // make the corner not sharp
        glVertex2i( right+lines-1,      top-1 );
        glVertex2i( right,                      top );

        glEnd();
        stop_glerror();
}

void gl_line_2d(S32 x1, S32 y1, S32 x2, S32 y2 )
{
        // Work around bug in ATI driver: vertical lines are offset by (-1,-1)
        if( gGLManager.mATIOffsetVerticalLines && (x1 == x2) )
        {
                x1++;
                x2++;
                y1++;
                y2++;
        }

        LLGLSNoTexture no_texture;
        
        glBegin(GL_LINES);
                glVertex2i(x1, y1);
                glVertex2i(x2, y2);
        glEnd();
}

void gl_line_2d(S32 x1, S32 y1, S32 x2, S32 y2, const LLColor4 &color )
{
        // Work around bug in ATI driver: vertical lines are offset by (-1,-1)
        if( gGLManager.mATIOffsetVerticalLines && (x1 == x2) )
        {
                x1++;
                x2++;
                y1++;
                y2++;
        }

        LLGLSNoTexture no_texture;

        glColor4fv( color.mV );

        glBegin(GL_LINES);
                glVertex2i(x1, y1);
                glVertex2i(x2, y2);
        glEnd();
}

void gl_triangle_2d(S32 x1, S32 y1, S32 x2, S32 y2, S32 x3, S32 y3, const LLColor4& color, BOOL filled)
{
        LLGLSNoTexture no_texture;

        glColor4fv(color.mV);

        if (filled)
        {
                glBegin(GL_TRIANGLES);
        }
        else
        {
                glBegin(GL_LINE_LOOP);
        }
        glVertex2i(x1, y1);
        glVertex2i(x2, y2);
        glVertex2i(x3, y3);
        glEnd();
}

void gl_corners_2d(S32 left, S32 top, S32 right, S32 bottom, S32 length, F32 max_frac)
{
        LLGLSNoTexture no_texture;

        length = llmin((S32)(max_frac*(right - left)), length);
        length = llmin((S32)(max_frac*(top - bottom)), length);
        glBegin(GL_LINES);
        glVertex2i(left, top);
        glVertex2i(left + length, top);
        
        glVertex2i(left, top);
        glVertex2i(left, top - length);

        glVertex2i(left, bottom);
        glVertex2i(left + length, bottom);
        
        glVertex2i(left, bottom);
        glVertex2i(left, bottom + length);

        glVertex2i(right, top);
        glVertex2i(right - length, top);

        glVertex2i(right, top);
        glVertex2i(right, top - length);

        glVertex2i(right, bottom);
        glVertex2i(right - length, bottom);

        glVertex2i(right, bottom);
        glVertex2i(right, bottom + length);
        glEnd();
}


void gl_draw_image( S32 x, S32 y, LLImageGL* image, const LLColor4& color )
{
        gl_draw_scaled_rotated_image( x, y, image->getWidth(0), image->getHeight(0), 0.f, image, color );
}

void gl_draw_scaled_image(S32 x, S32 y, S32 width, S32 height, LLImageGL* image, const LLColor4& color)
{
        gl_draw_scaled_rotated_image( x, y, width, height, 0.f, image, color );
}

void gl_draw_scaled_image_with_border(S32 x, S32 y, S32 border_width, S32 border_height, S32 width, S32 height, LLImageGL* image, const LLColor4& color, BOOL solid_color)
{
        stop_glerror();
        F32 border_scale = 1.f;

        if (NULL == image)
        {
                llwarns << "image == NULL; aborting function" << llendl;
                return;
        }

        if (border_height * 2 > height)
        {
                border_scale = (F32)height / ((F32)border_height * 2.f);
        }
        if (border_width * 2 > width)
        {
                border_scale = llmin(border_scale, (F32)width / ((F32)border_width * 2.f));
        }

        // scale screen size of borders down
        S32 scaled_border_width = llfloor(border_scale * (F32)border_width);
        S32 scaled_border_height = llfloor(border_scale * (F32)border_height);

        LLGLSUIDefault gls_ui;
        
        if (solid_color)
        {
                glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE,          GL_COMBINE_ARB);
                glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB,           GL_REPLACE);
                glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB,         GL_MODULATE);

                glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_RGB_ARB,           GL_PREVIOUS);
                glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB_ARB,          GL_SRC_COLOR);

                glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE0_ALPHA_ARB,         GL_TEXTURE);
                glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA_ARB,        GL_SRC_ALPHA);

                glTexEnvi(GL_TEXTURE_ENV, GL_SOURCE1_ALPHA_ARB,         GL_PRIMARY_COLOR_ARB);
                glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA_ARB,        GL_SRC_ALPHA);
        }

        glPushMatrix();
        {
                glTranslatef((F32)x, (F32)y, 0.f);

                image->bind();

                glColor4fv(color.mV);
                
                F32 border_width_fraction = (F32)border_width / (F32)image->getWidth(0);
                F32 border_height_fraction = (F32)border_height / (F32)image->getHeight(0);

                glBegin(GL_QUADS);
                {
                        // draw bottom left
                        glTexCoord2f(0.f, 0.f);
                        glVertex2i(0, 0);

                        glTexCoord2f(border_width_fraction, 0.f);
                        glVertex2i(scaled_border_width, 0);

                        glTexCoord2f(border_width_fraction, border_height_fraction);
                        glVertex2i(scaled_border_width, scaled_border_height);

                        glTexCoord2f(0.f, border_height_fraction);
                        glVertex2i(0, scaled_border_height);

                        // draw bottom middle
                        glTexCoord2f(border_width_fraction, 0.f);
                        glVertex2i(scaled_border_width, 0);

                        glTexCoord2f(1.f - border_width_fraction, 0.f);
                        glVertex2i(width - scaled_border_width, 0);

                        glTexCoord2f(1.f - border_width_fraction, border_height_fraction);
                        glVertex2i(width - scaled_border_width, scaled_border_height);

                        glTexCoord2f(border_width_fraction, border_height_fraction);
                        glVertex2i(scaled_border_width, scaled_border_height);

                        // draw bottom right
                        glTexCoord2f(1.f - border_width_fraction, 0.f);
                        glVertex2i(width - scaled_border_width, 0);

                        glTexCoord2f(1.f, 0.f);
                        glVertex2i(width, 0);

                        glTexCoord2f(1.f, border_height_fraction);
                        glVertex2i(width, scaled_border_height);

                        glTexCoord2f(1.f - border_width_fraction, border_height_fraction);
                        glVertex2i(width - scaled_border_width, scaled_border_height);

                        // draw left 
                        glTexCoord2f(0.f, border_height_fraction);
                        glVertex2i(0, scaled_border_height);

                        glTexCoord2f(border_width_fraction, border_height_fraction);
                        glVertex2i(scaled_border_width, scaled_border_height);

                        glTexCoord2f(border_width_fraction, 1.f - border_height_fraction);
                        glVertex2i(scaled_border_width, height - scaled_border_height);

                        glTexCoord2f(0.f, 1.f - border_height_fraction);
                        glVertex2i(0, height - scaled_border_height);

                        // draw middle
                        glTexCoord2f(border_width_fraction, border_height_fraction);
                        glVertex2i(scaled_border_width, scaled_border_height);

                        glTexCoord2f(1.f - border_width_fraction, border_height_fraction);
                        glVertex2i(width - scaled_border_width, scaled_border_height);

                        glTexCoord2f(1.f - border_width_fraction, 1.f - border_height_fraction);
                        glVertex2i(width - scaled_border_width, height - scaled_border_height);

                        glTexCoord2f(border_width_fraction, 1.f - border_height_fraction);
                        glVertex2i(scaled_border_width, height - scaled_border_height);

                        // draw right 
                        glTexCoord2f(1.f - border_width_fraction, border_height_fraction);
                        glVertex2i(width - scaled_border_width, scaled_border_height);

                        glTexCoord2f(1.f, border_height_fraction);
                        glVertex2i(width, scaled_border_height);

                        glTexCoord2f(1.f, 1.f - border_height_fraction);
                        glVertex2i(width, height - scaled_border_height);

                        glTexCoord2f(1.f - border_width_fraction, 1.f - border_height_fraction);
                        glVertex2i(width - scaled_border_width, height - scaled_border_height);

                        // draw top left
                        glTexCoord2f(0.f, 1.f - border_height_fraction);
                        glVertex2i(0, height - scaled_border_height);

                        glTexCoord2f(border_width_fraction, 1.f - border_height_fraction);
                        glVertex2i(scaled_border_width, height - scaled_border_height);

                        glTexCoord2f(border_width_fraction, 1.f);
                        glVertex2i(scaled_border_width, height);

                        glTexCoord2f(0.f, 1.f);
                        glVertex2i(0, height);

                        // draw top middle
                        glTexCoord2f(border_width_fraction, 1.f - border_height_fraction);
                        glVertex2i(scaled_border_width, height - scaled_border_height);

                        glTexCoord2f(1.f - border_width_fraction, 1.f - border_height_fraction);
                        glVertex2i(width - scaled_border_width, height - scaled_border_height);

                        glTexCoord2f(1.f - border_width_fraction, 1.f);
                        glVertex2i(width - scaled_border_width, height);

                        glTexCoord2f(border_width_fraction, 1.f);
                        glVertex2i(scaled_border_width, height);

                        // draw top right
                        glTexCoord2f(1.f - border_width_fraction, 1.f - border_height_fraction);
                        glVertex2i(width - scaled_border_width, height - scaled_border_height);

                        glTexCoord2f(1.f, 1.f - border_height_fraction);
                        glVertex2i(width, height - scaled_border_height);

                        glTexCoord2f(1.f, 1.f);
                        glVertex2i(width, height);

                        glTexCoord2f(1.f - border_width_fraction, 1.f);
                        glVertex2i(width - scaled_border_width, height);
                }
                glEnd();
        }
        glPopMatrix();

        if (solid_color)
        {
                glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
        }
}

void gl_draw_rotated_image(S32 x, S32 y, F32 degrees, LLImageGL* image, const LLColor4& color)
{
        gl_draw_scaled_rotated_image( x, y, image->getWidth(0), image->getHeight(0), degrees, image, color );
}

void gl_draw_scaled_rotated_image(S32 x, S32 y, S32 width, S32 height, F32 degrees, LLImageGL* image, const LLColor4& color)
{
        if (NULL == image)
        {
                llwarns << "image == NULL; aborting function" << llendl;
                return;
        }

        LLGLSUIDefault gls_ui;

        glPushMatrix();
        {
                glTranslatef((F32)x, (F32)y, 0.f);
                if( degrees )
                {
                        F32 offset_x = F32(width/2);
                        F32 offset_y = F32(height/2);
                        glTranslatef( offset_x, offset_y, 0.f);
                        glRotatef( degrees, 0.f, 0.f, 1.f );
                        glTranslatef( -offset_x, -offset_y, 0.f );
                }

                image->bind();

                glColor4fv(color.mV);
                
                glBegin(GL_QUADS);
                {
                        glTexCoord2f(1.f, 1.f);
                        glVertex2i(width, height );

                        glTexCoord2f(0.f, 1.f);
                        glVertex2i(0, height );

                        glTexCoord2f(0.f, 0.f);
                        glVertex2i(0, 0);

                        glTexCoord2f(1.f, 0.f);
                        glVertex2i(width, 0);
                }
                glEnd();
        }
        glPopMatrix();
}


void gl_draw_scaled_image_inverted(S32 x, S32 y, S32 width, S32 height, LLImageGL* image, const LLColor4& color)
{
        if (NULL == image)
        {
                llwarns << "image == NULL; aborting function" << llendl;
                return;
        }

        LLGLSUIDefault gls_ui;

        glPushMatrix();
        {
                glTranslatef((F32)x, (F32)y, 0.f);

                image->bind();

                glColor4fv(color.mV);
                
                glBegin(GL_QUADS);
                {
                        glTexCoord2f(1.f, 0.f);
                        glVertex2i(width, height );

                        glTexCoord2f(0.f, 0.f);
                        glVertex2i(0, height );

                        glTexCoord2f(0.f, 1.f);
                        glVertex2i(0, 0);

                        glTexCoord2f(1.f, 1.f);
                        glVertex2i(width, 0);
                }
                glEnd();
        }
        glPopMatrix();
}


void gl_stippled_line_3d( const LLVector3& start, const LLVector3& end, const LLColor4& color, F32 phase )
{
        phase = fmod(phase, 1.f);

        S32 shift = S32(phase * 4.f) % 4;

        // Stippled line
        LLGLEnable stipple(GL_LINE_STIPPLE);
        
        glColor4f(color.mV[VRED], color.mV[VGREEN], color.mV[VBLUE], color.mV[VALPHA]);
        glLineWidth(2.5f);
        glLineStipple(2, 0x3333 << shift);

        glBegin(GL_LINES);
        {
                glVertex3fv( start.mV );
                glVertex3fv( end.mV );
        }
        glEnd();

        LLUI::setLineWidth(1.f);
}


void gl_rect_2d_xor(S32 left, S32 top, S32 right, S32 bottom)
{
        glColor4fv( LLColor4::white.mV );
        glLogicOp( GL_XOR );
        stop_glerror();

        glBegin(GL_QUADS);
                glVertex2i(left, top);
                glVertex2i(left, bottom);
                glVertex2i(right, bottom);
                glVertex2i(right, top);
        glEnd();

        glLogicOp( GL_COPY );
        stop_glerror();
}


void gl_arc_2d(F32 center_x, F32 center_y, F32 radius, S32 steps, BOOL filled, F32 start_angle, F32 end_angle)
{
        if (end_angle < start_angle)
        {
                end_angle += F_TWO_PI;
        }

        glPushMatrix();
        {
                glTranslatef(center_x, center_y, 0.f);

                // Inexact, but reasonably fast.
                F32 delta = (end_angle - start_angle) / steps;
                F32 sin_delta = sin( delta );
                F32 cos_delta = cos( delta );
                F32 x = cosf(start_angle) * radius;
                F32 y = sinf(start_angle) * radius;

                if (filled)
                {
                        glBegin(GL_TRIANGLE_FAN);
                        glVertex2f(0.f, 0.f);
                        // make sure circle is complete
                        steps += 1;
                }
                else
                {
                        glBegin(GL_LINE_STRIP);
                }

                while( steps-- )
                {
                        // Successive rotations
                        glVertex2f( x, y );
                        F32 x_new = x * cos_delta - y * sin_delta;
                        y = x * sin_delta +  y * cos_delta;
                        x = x_new;
                }
                glEnd();
        }
        glPopMatrix();
}

void gl_circle_2d(F32 center_x, F32 center_y, F32 radius, S32 steps, BOOL filled)
{
        glPushMatrix();
        {
                LLGLSNoTexture gls_no_texture;
                glTranslatef(center_x, center_y, 0.f);

                // Inexact, but reasonably fast.
                F32 delta = F_TWO_PI / steps;
                F32 sin_delta = sin( delta );
                F32 cos_delta = cos( delta );
                F32 x = radius;
                F32 y = 0.f;

                if (filled)
                {
                        glBegin(GL_TRIANGLE_FAN);
                        glVertex2f(0.f, 0.f);
                        // make sure circle is complete
                        steps += 1;
                }
                else
                {
                        glBegin(GL_LINE_LOOP);
                }

                while( steps-- )
                {
                        // Successive rotations
                        glVertex2f( x, y );
                        F32 x_new = x * cos_delta - y * sin_delta;
                        y = x * sin_delta +  y * cos_delta;
                        x = x_new;
                }
                glEnd();
        }
        glPopMatrix();
}

// Renders a ring with sides (tube shape)
void gl_deep_circle( F32 radius, F32 depth, S32 steps )
{
        F32 x = radius;
        F32 y = 0.f;
        F32 angle_delta = F_TWO_PI / (F32)steps;
        glBegin( GL_TRIANGLE_STRIP  );
        {
                S32 step = steps + 1; // An extra step to close the circle.
                while( step-- )
                {
                        glVertex3f( x, y, depth );
                        glVertex3f( x, y, 0.f );

                        F32 x_new = x * cosf(angle_delta) - y * sinf(angle_delta);
                        y = x * sinf(angle_delta) +  y * cosf(angle_delta);
                        x = x_new;
                }
        }
        glEnd();
}

void gl_ring( F32 radius, F32 width, const LLColor4& center_color, const LLColor4& side_color, S32 steps, BOOL render_center )
{
        glPushMatrix();
        {
                glTranslatef(0.f, 0.f, -width / 2);
                if( render_center )
                {
                        glColor4fv(center_color.mV);
                        gl_deep_circle( radius, width, steps );
                }
                else
                {
                        gl_washer_2d(radius, radius - width, steps, side_color, side_color);
                        glTranslatef(0.f, 0.f, width);
                        gl_washer_2d(radius - width, radius, steps, side_color, side_color);
                }
        }
        glPopMatrix();
}

// Draw gray and white checkerboard with black border
void gl_rect_2d_checkerboard(const LLRect& rect)
{
        // Initialize the first time this is called.
        const S32 PIXELS = 32;
        static GLubyte checkerboard[PIXELS * PIXELS];
        static BOOL first = TRUE;
        if( first )
        {
                for( S32 i = 0; i < PIXELS; i++ )
                {
                        for( S32 j = 0; j < PIXELS; j++ )
                        {
                                checkerboard[i * PIXELS + j] = ((i & 1) ^ (j & 1)) * 0xFF;
                        }
                }
                first = FALSE;
        }
        
        LLGLSNoTexture gls_no_texture;

        // ...white squares
        glColor3f( 1.f, 1.f, 1.f );
        gl_rect_2d(rect);

        // ...gray squares
        glColor3f( .7f, .7f, .7f );
        glPolygonStipple( checkerboard );

        LLGLEnable polygon_stipple(GL_POLYGON_STIPPLE);
        gl_rect_2d(rect);
}


// Draws the area between two concentric circles, like
// a doughnut or washer.
void gl_washer_2d(F32 outer_radius, F32 inner_radius, S32 steps, const LLColor4& inner_color, const LLColor4& outer_color)
{
        const F32 DELTA = F_TWO_PI / steps;
        const F32 SIN_DELTA = sin( DELTA );
        const F32 COS_DELTA = cos( DELTA );

        F32 x1 = outer_radius;
        F32 y1 = 0.f;
        F32 x2 = inner_radius;
        F32 y2 = 0.f;

        LLGLSNoTexture gls_no_texture;

        glBegin( GL_TRIANGLE_STRIP  );
        {
                steps += 1; // An extra step to close the circle.
                while( steps-- )
                {
                        glColor4fv(outer_color.mV);
                        glVertex2f( x1, y1 );
                        glColor4fv(inner_color.mV);
                        glVertex2f( x2, y2 );

                        F32 x1_new = x1 * COS_DELTA - y1 * SIN_DELTA;
                        y1 = x1 * SIN_DELTA +  y1 * COS_DELTA;
                        x1 = x1_new;

                        F32 x2_new = x2 * COS_DELTA - y2 * SIN_DELTA;
                        y2 = x2 * SIN_DELTA +  y2 * COS_DELTA;
                        x2 = x2_new;
                }
        }
        glEnd();
}

// Draws the area between two concentric circles, like
// a doughnut or washer.
void gl_washer_segment_2d(F32 outer_radius, F32 inner_radius, F32 start_radians, F32 end_radians, S32 steps, const LLColor4& inner_color, const LLColor4& outer_color)
{
        const F32 DELTA = (end_radians - start_radians) / steps;
        const F32 SIN_DELTA = sin( DELTA );
        const F32 COS_DELTA = cos( DELTA );

        F32 x1 = outer_radius * cos( start_radians );
        F32 y1 = outer_radius * sin( start_radians );
        F32 x2 = inner_radius * cos( start_radians );
        F32 y2 = inner_radius * sin( start_radians );

        LLGLSNoTexture gls_no_texture;
        glBegin( GL_TRIANGLE_STRIP  );
        {
                steps += 1; // An extra step to close the circle.
                while( steps-- )
                {
                        glColor4fv(outer_color.mV);
                        glVertex2f( x1, y1 );
                        glColor4fv(inner_color.mV);
                        glVertex2f( x2, y2 );

                        F32 x1_new = x1 * COS_DELTA - y1 * SIN_DELTA;
                        y1 = x1 * SIN_DELTA +  y1 * COS_DELTA;
                        x1 = x1_new;

                        F32 x2_new = x2 * COS_DELTA - y2 * SIN_DELTA;
                        y2 = x2 * SIN_DELTA +  y2 * COS_DELTA;
                        x2 = x2_new;
                }
        }
        glEnd();
}

// Draws spokes around a circle.
void gl_washer_spokes_2d(F32 outer_radius, F32 inner_radius, S32 count, const LLColor4& inner_color, const LLColor4& outer_color)
{
        const F32 DELTA = F_TWO_PI / count;
        const F32 HALF_DELTA = DELTA * 0.5f;
        const F32 SIN_DELTA = sin( DELTA );
        const F32 COS_DELTA = cos( DELTA );

        F32 x1 = outer_radius * cos( HALF_DELTA );
        F32 y1 = outer_radius * sin( HALF_DELTA );
        F32 x2 = inner_radius * cos( HALF_DELTA );
        F32 y2 = inner_radius * sin( HALF_DELTA );

        LLGLSNoTexture gls_no_texture;

        glBegin( GL_LINES  );
        {
                while( count-- )
                {
                        glColor4fv(outer_color.mV);
                        glVertex2f( x1, y1 );
                        glColor4fv(inner_color.mV);
                        glVertex2f( x2, y2 );

                        F32 x1_new = x1 * COS_DELTA - y1 * SIN_DELTA;
                        y1 = x1 * SIN_DELTA +  y1 * COS_DELTA;
                        x1 = x1_new;

                        F32 x2_new = x2 * COS_DELTA - y2 * SIN_DELTA;
                        y2 = x2 * SIN_DELTA +  y2 * COS_DELTA;
                        x2 = x2_new;
                }
        }
        glEnd();
}

void gl_rect_2d_simple_tex( S32 width, S32 height )
{
        glBegin( GL_QUADS );

                glTexCoord2f(1.f, 1.f);
                glVertex2i(width, height);

                glTexCoord2f(0.f, 1.f);
                glVertex2i(0, height);

                glTexCoord2f(0.f, 0.f);
                glVertex2i(0, 0);

                glTexCoord2f(1.f, 0.f);
                glVertex2i(width, 0);
        
        glEnd();
}

void gl_rect_2d_simple( S32 width, S32 height )
{
        glBegin( GL_QUADS );
                glVertex2i(width, height);
                glVertex2i(0, height);
                glVertex2i(0, 0);
                glVertex2i(width, 0);
        glEnd();
}

void gl_segmented_rect_2d_tex(const S32 left, 
                                                          const S32 top, 
                                                          const S32 right, 
                                                          const S32 bottom, 
                                                          const S32 texture_width, 
                                                          const S32 texture_height, 
                                                          const S32 border_size, 
                                                          const U32 edges)
{
        S32 width = llabs(right - left);
        S32 height = llabs(top - bottom);

        glPushMatrix();

        glTranslatef((F32)left, (F32)bottom, 0.f);
        LLVector2 border_uv_scale((F32)border_size / (F32)texture_width, (F32)border_size / (F32)texture_height);

        if (border_uv_scale.mV[VX] > 0.5f)
        {
                border_uv_scale *= 0.5f / border_uv_scale.mV[VX];
        }
        if (border_uv_scale.mV[VY] > 0.5f)
        {
                border_uv_scale *= 0.5f / border_uv_scale.mV[VY];
        }

        F32 border_scale = llmin((F32)border_size, (F32)width * 0.5f, (F32)height * 0.5f);
        LLVector2 border_width_left = ((edges & (~(U32)ROUNDED_RECT_RIGHT)) != 0) ? LLVector2(border_scale, 0.f) : LLVector2::zero;
        LLVector2 border_width_right = ((edges & (~(U32)ROUNDED_RECT_LEFT)) != 0) ? LLVector2(border_scale, 0.f) : LLVector2::zero;
        LLVector2 border_height_bottom = ((edges & (~(U32)ROUNDED_RECT_TOP)) != 0) ? LLVector2(0.f, border_scale) : LLVector2::zero;
        LLVector2 border_height_top = ((edges & (~(U32)ROUNDED_RECT_BOTTOM)) != 0) ? LLVector2(0.f, border_scale) : LLVector2::zero;
        LLVector2 width_vec((F32)width, 0.f);
        LLVector2 height_vec(0.f, (F32)height);

        glBegin(GL_QUADS);
        {
                // draw bottom left
                glTexCoord2f(0.f, 0.f);
                glVertex2f(0.f, 0.f);

                glTexCoord2f(border_uv_scale.mV[VX], 0.f);
                glVertex2fv(border_width_left.mV);

                glTexCoord2f(border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
                glVertex2fv((border_width_left + border_height_bottom).mV);

                glTexCoord2f(0.f, border_uv_scale.mV[VY]);
                glVertex2fv(border_height_bottom.mV);

                // draw bottom middle
                glTexCoord2f(border_uv_scale.mV[VX], 0.f);
                glVertex2fv(border_width_left.mV);

                glTexCoord2f(1.f - border_uv_scale.mV[VX], 0.f);
                glVertex2fv((width_vec - border_width_right).mV);

                glTexCoord2f(1.f - border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
                glVertex2fv((width_vec - border_width_right + border_height_bottom).mV);

                glTexCoord2f(border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
                glVertex2fv((border_width_left + border_height_bottom).mV);

                // draw bottom right
                glTexCoord2f(1.f - border_uv_scale.mV[VX], 0.f);
                glVertex2fv((width_vec - border_width_right).mV);

                glTexCoord2f(1.f, 0.f);
                glVertex2fv(width_vec.mV);

                glTexCoord2f(1.f, border_uv_scale.mV[VY]);
                glVertex2fv((width_vec + border_height_bottom).mV);

                glTexCoord2f(1.f - border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
                glVertex2fv((width_vec - border_width_right + border_height_bottom).mV);

                // draw left 
                glTexCoord2f(0.f, border_uv_scale.mV[VY]);
                glVertex2fv(border_height_bottom.mV);

                glTexCoord2f(border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
                glVertex2fv((border_width_left + border_height_bottom).mV);

                glTexCoord2f(border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
                glVertex2fv((border_width_left + height_vec - border_height_top).mV);

                glTexCoord2f(0.f, 1.f - border_uv_scale.mV[VY]);
                glVertex2fv((height_vec - border_height_top).mV);

                // draw middle
                glTexCoord2f(border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
                glVertex2fv((border_width_left + border_height_bottom).mV);

                glTexCoord2f(1.f - border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
                glVertex2fv((width_vec - border_width_right + border_height_bottom).mV);

                glTexCoord2f(1.f - border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
                glVertex2fv((width_vec - border_width_right + height_vec - border_height_top).mV);

                glTexCoord2f(border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
                glVertex2fv((border_width_left + height_vec - border_height_top).mV);

                // draw right 
                glTexCoord2f(1.f - border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
                glVertex2fv((width_vec - border_width_right + border_height_bottom).mV);

                glTexCoord2f(1.f, border_uv_scale.mV[VY]);
                glVertex2fv((width_vec + border_height_bottom).mV);

                glTexCoord2f(1.f, 1.f - border_uv_scale.mV[VY]);
                glVertex2fv((width_vec + height_vec - border_height_top).mV);

                glTexCoord2f(1.f - border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
                glVertex2fv((width_vec - border_width_right + height_vec - border_height_top).mV);

                // draw top left
                glTexCoord2f(0.f, 1.f - border_uv_scale.mV[VY]);
                glVertex2fv((height_vec - border_height_top).mV);

                glTexCoord2f(border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
                glVertex2fv((border_width_left + height_vec - border_height_top).mV);

                glTexCoord2f(border_uv_scale.mV[VX], 1.f);
                glVertex2fv((border_width_left + height_vec).mV);

                glTexCoord2f(0.f, 1.f);
                glVertex2fv((height_vec).mV);

                // draw top middle
                glTexCoord2f(border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
                glVertex2fv((border_width_left + height_vec - border_height_top).mV);

                glTexCoord2f(1.f - border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
                glVertex2fv((width_vec - border_width_right + height_vec - border_height_top).mV);

                glTexCoord2f(1.f - border_uv_scale.mV[VX], 1.f);
                glVertex2fv((width_vec - border_width_right + height_vec).mV);

                glTexCoord2f(border_uv_scale.mV[VX], 1.f);
                glVertex2fv((border_width_left + height_vec).mV);

                // draw top right
                glTexCoord2f(1.f - border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
                glVertex2fv((width_vec - border_width_right + height_vec - border_height_top).mV);

                glTexCoord2f(1.f, 1.f - border_uv_scale.mV[VY]);
                glVertex2fv((width_vec + height_vec - border_height_top).mV);

                glTexCoord2f(1.f, 1.f);
                glVertex2fv((width_vec + height_vec).mV);

                glTexCoord2f(1.f - border_uv_scale.mV[VX], 1.f);
                glVertex2fv((width_vec - border_width_right + height_vec).mV);
        }
        glEnd();

        glPopMatrix();
}

void gl_segmented_rect_2d_fragment_tex(const S32 left, 
                                                                           const S32 top, 
                                                                           const S32 right, 
                                                                           const S32 bottom, 
                                                                           const S32 texture_width, 
                                                                           const S32 texture_height, 
                                                                           const S32 border_size, 
                                                                           const F32 start_fragment, 
                                                                           const F32 end_fragment, 
                                                                           const U32 edges)
{
        S32 width = llabs(right - left);
        S32 height = llabs(top - bottom);

        glPushMatrix();

        glTranslatef((F32)left, (F32)bottom, 0.f);
        LLVector2 border_uv_scale((F32)border_size / (F32)texture_width, (F32)border_size / (F32)texture_height);

        if (border_uv_scale.mV[VX] > 0.5f)
        {
                border_uv_scale *= 0.5f / border_uv_scale.mV[VX];
        }
        if (border_uv_scale.mV[VY] > 0.5f)
        {
                border_uv_scale *= 0.5f / border_uv_scale.mV[VY];
        }

        F32 border_scale = llmin((F32)border_size, (F32)width * 0.5f, (F32)height * 0.5f);
        LLVector2 border_width_left = ((edges & (~(U32)ROUNDED_RECT_RIGHT)) != 0) ? LLVector2(border_scale, 0.f) : LLVector2::zero;
        LLVector2 border_width_right = ((edges & (~(U32)ROUNDED_RECT_LEFT)) != 0) ? LLVector2(border_scale, 0.f) : LLVector2::zero;
        LLVector2 border_height_bottom = ((edges & (~(U32)ROUNDED_RECT_TOP)) != 0) ? LLVector2(0.f, border_scale) : LLVector2::zero;
        LLVector2 border_height_top = ((edges & (~(U32)ROUNDED_RECT_BOTTOM)) != 0) ? LLVector2(0.f, border_scale) : LLVector2::zero;
        LLVector2 width_vec((F32)width, 0.f);
        LLVector2 height_vec(0.f, (F32)height);

        F32 middle_start = border_scale / (F32)width;
        F32 middle_end = 1.f - middle_start;

        F32 u_min;
        F32 u_max;
        LLVector2 x_min;
        LLVector2 x_max;

        glBegin(GL_QUADS);
        {
                if (start_fragment < middle_start)
                {
                        u_min = (start_fragment / middle_start) * border_uv_scale.mV[VX];
                        u_max = llmin(end_fragment / middle_start, 1.f) * border_uv_scale.mV[VX];
                        x_min = (start_fragment / middle_start) * border_width_left;
                        x_max = llmin(end_fragment / middle_start, 1.f) * border_width_left;

                        // draw bottom left
                        glTexCoord2f(u_min, 0.f);
                        glVertex2fv(x_min.mV);

                        glTexCoord2f(border_uv_scale.mV[VX], 0.f);
                        glVertex2fv(x_max.mV);

                        glTexCoord2f(u_max, border_uv_scale.mV[VY]);
                        glVertex2fv((x_max + border_height_bottom).mV);

                        glTexCoord2f(u_min, border_uv_scale.mV[VY]);
                        glVertex2fv((x_min + border_height_bottom).mV);

                        // draw left 
                        glTexCoord2f(u_min, border_uv_scale.mV[VY]);
                        glVertex2fv((x_min + border_height_bottom).mV);

                        glTexCoord2f(u_max, border_uv_scale.mV[VY]);
                        glVertex2fv((x_max + border_height_bottom).mV);

                        glTexCoord2f(u_max, 1.f - border_uv_scale.mV[VY]);
                        glVertex2fv((x_max + height_vec - border_height_top).mV);

                        glTexCoord2f(u_min, 1.f - border_uv_scale.mV[VY]);
                        glVertex2fv((x_min + height_vec - border_height_top).mV);
                        
                        // draw top left
                        glTexCoord2f(u_min, 1.f - border_uv_scale.mV[VY]);
                        glVertex2fv((x_min + height_vec - border_height_top).mV);

                        glTexCoord2f(u_max, 1.f - border_uv_scale.mV[VY]);
                        glVertex2fv((x_max + height_vec - border_height_top).mV);

                        glTexCoord2f(u_max, 1.f);
                        glVertex2fv((x_max + height_vec).mV);

                        glTexCoord2f(u_min, 1.f);
                        glVertex2fv((x_min + height_vec).mV);
                }

                if (end_fragment > middle_start || start_fragment < middle_end)
                {
                        x_min = border_width_left + ((llclamp(start_fragment, middle_start, middle_end) - middle_start)) * width_vec;
                        x_max = border_width_left + ((llclamp(end_fragment, middle_start, middle_end) - middle_start)) * width_vec;

                        // draw bottom middle
                        glTexCoord2f(border_uv_scale.mV[VX], 0.f);
                        glVertex2fv(x_min.mV);

                        glTexCoord2f(1.f - border_uv_scale.mV[VX], 0.f);
                        glVertex2fv((x_max).mV);

                        glTexCoord2f(1.f - border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
                        glVertex2fv((x_max + border_height_bottom).mV);

                        glTexCoord2f(border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
                        glVertex2fv((x_min + border_height_bottom).mV);

                        // draw middle
                        glTexCoord2f(border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
                        glVertex2fv((x_min + border_height_bottom).mV);

                        glTexCoord2f(1.f - border_uv_scale.mV[VX], border_uv_scale.mV[VY]);
                        glVertex2fv((x_max + border_height_bottom).mV);

                        glTexCoord2f(1.f - border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
                        glVertex2fv((x_max + height_vec - border_height_top).mV);

                        glTexCoord2f(border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
                        glVertex2fv((x_min + height_vec - border_height_top).mV);

                        // draw top middle
                        glTexCoord2f(border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
                        glVertex2fv((x_min + height_vec - border_height_top).mV);

                        glTexCoord2f(1.f - border_uv_scale.mV[VX], 1.f - border_uv_scale.mV[VY]);
                        glVertex2fv((x_max + height_vec - border_height_top).mV);

                        glTexCoord2f(1.f - border_uv_scale.mV[VX], 1.f);
                        glVertex2fv((x_max + height_vec).mV);

                        glTexCoord2f(border_uv_scale.mV[VX], 1.f);
                        glVertex2fv((x_min + height_vec).mV);
                }

                if (end_fragment > middle_end)
                {
                        u_min = (1.f - llmax(0.f, ((start_fragment - middle_end) / middle_start))) * border_uv_scale.mV[VX];
                        u_max = (1.f - ((end_fragment - middle_end) / middle_start)) * border_uv_scale.mV[VX];
                        x_min = width_vec - ((1.f - llmax(0.f, ((start_fragment - middle_end) / middle_start))) * border_width_right);
                        x_max = width_vec - ((1.f - ((end_fragment - middle_end) / middle_start)) * border_width_right);

                        // draw bottom right
                        glTexCoord2f(u_min, 0.f);
                        glVertex2fv((x_min).mV);

                        glTexCoord2f(u_max, 0.f);
                        glVertex2fv(x_max.mV);

                        glTexCoord2f(u_max, border_uv_scale.mV[VY]);
                        glVertex2fv((x_max + border_height_bottom).mV);

                        glTexCoord2f(u_min, border_uv_scale.mV[VY]);
                        glVertex2fv((x_min + border_height_bottom).mV);

                        // draw right 
                        glTexCoord2f(u_min, border_uv_scale.mV[VY]);
                        glVertex2fv((x_min + border_height_bottom).mV);

                        glTexCoord2f(u_max, border_uv_scale.mV[VY]);
                        glVertex2fv((x_max + border_height_bottom).mV);

                        glTexCoord2f(u_max, 1.f - border_uv_scale.mV[VY]);
                        glVertex2fv((x_max + height_vec - border_height_top).mV);

                        glTexCoord2f(u_min, 1.f - border_uv_scale.mV[VY]);
                        glVertex2fv((x_min + height_vec - border_height_top).mV);

                        // draw top right
                        glTexCoord2f(u_min, 1.f - border_uv_scale.mV[VY]);
                        glVertex2fv((x_min + height_vec - border_height_top).mV);

                        glTexCoord2f(u_max, 1.f - border_uv_scale.mV[VY]);
                        glVertex2fv((x_max + height_vec - border_height_top).mV);

                        glTexCoord2f(u_max, 1.f);
                        glVertex2fv((x_max + height_vec).mV);

                        glTexCoord2f(u_min, 1.f);
                        glVertex2fv((x_min + height_vec).mV);
                }
        }
        glEnd();

        glPopMatrix();
}

void gl_segmented_rect_3d_tex(const LLVector2& border_scale, const LLVector3& border_width, 
                                                          const LLVector3& border_height, const LLVector3& width_vec, const LLVector3& height_vec,
                                                          const U32 edges)
{
        LLVector3 left_border_width = ((edges & (~(U32)ROUNDED_RECT_RIGHT)) != 0) ? border_width : LLVector3::zero;
        LLVector3 right_border_width = ((edges & (~(U32)ROUNDED_RECT_LEFT)) != 0) ? border_width : LLVector3::zero;

        LLVector3 top_border_height = ((edges & (~(U32)ROUNDED_RECT_BOTTOM)) != 0) ? border_height : LLVector3::zero;
        LLVector3 bottom_border_height = ((edges & (~(U32)ROUNDED_RECT_TOP)) != 0) ? border_height : LLVector3::zero;

        glBegin(GL_QUADS);
        {
                // draw bottom left
                glTexCoord2f(0.f, 0.f);
                glVertex3f(0.f, 0.f, 0.f);

                glTexCoord2f(border_scale.mV[VX], 0.f);
                glVertex3fv(left_border_width.mV);

                glTexCoord2f(border_scale.mV[VX], border_scale.mV[VY]);
                glVertex3fv((left_border_width + bottom_border_height).mV);

                glTexCoord2f(0.f, border_scale.mV[VY]);
                glVertex3fv(bottom_border_height.mV);

                // draw bottom middle
                glTexCoord2f(border_scale.mV[VX], 0.f);
                glVertex3fv(left_border_width.mV);

                glTexCoord2f(1.f - border_scale.mV[VX], 0.f);
                glVertex3fv((width_vec - right_border_width).mV);

                glTexCoord2f(1.f - border_scale.mV[VX], border_scale.mV[VY]);
                glVertex3fv((width_vec - right_border_width + bottom_border_height).mV);

                glTexCoord2f(border_scale.mV[VX], border_scale.mV[VY]);
                glVertex3fv((left_border_width + bottom_border_height).mV);

                // draw bottom right
                glTexCoord2f(1.f - border_scale.mV[VX], 0.f);
                glVertex3fv((width_vec - right_border_width).mV);

                glTexCoord2f(1.f, 0.f);
                glVertex3fv(width_vec.mV);

                glTexCoord2f(1.f, border_scale.mV[VY]);
                glVertex3fv((width_vec + bottom_border_height).mV);

                glTexCoord2f(1.f - border_scale.mV[VX], border_scale.mV[VY]);
                glVertex3fv((width_vec - right_border_width + bottom_border_height).mV);

                // draw left 
                glTexCoord2f(0.f, border_scale.mV[VY]);
                glVertex3fv(bottom_border_height.mV);

                glTexCoord2f(border_scale.mV[VX], border_scale.mV[VY]);
                glVertex3fv((left_border_width + bottom_border_height).mV);

                glTexCoord2f(border_scale.mV[VX], 1.f - border_scale.mV[VY]);
                glVertex3fv((left_border_width + height_vec - top_border_height).mV);

                glTexCoord2f(0.f, 1.f - border_scale.mV[VY]);
                glVertex3fv((height_vec - top_border_height).mV);

                // draw middle
                glTexCoord2f(border_scale.mV[VX], border_scale.mV[VY]);
                glVertex3fv((left_border_width + bottom_border_height).mV);

                glTexCoord2f(1.f - border_scale.mV[VX], border_scale.mV[VY]);
                glVertex3fv((width_vec - right_border_width + bottom_border_height).mV);

                glTexCoord2f(1.f - border_scale.mV[VX], 1.f - border_scale.mV[VY]);
                glVertex3fv((width_vec - right_border_width + height_vec - top_border_height).mV);

                glTexCoord2f(border_scale.mV[VX], 1.f - border_scale.mV[VY]);
                glVertex3fv((left_border_width + height_vec - top_border_height).mV);

                // draw right 
                glTexCoord2f(1.f - border_scale.mV[VX], border_scale.mV[VY]);
                glVertex3fv((width_vec - right_border_width + bottom_border_height).mV);

                glTexCoord2f(1.f, border_scale.mV[VY]);
                glVertex3fv((width_vec + bottom_border_height).mV);

                glTexCoord2f(1.f, 1.f - border_scale.mV[VY]);
                glVertex3fv((width_vec + height_vec - top_border_height).mV);

                glTexCoord2f(1.f - border_scale.mV[VX], 1.f - border_scale.mV[VY]);
                glVertex3fv((width_vec - right_border_width + height_vec - top_border_height).mV);

                // draw top left
                glTexCoord2f(0.f, 1.f - border_scale.mV[VY]);
                glVertex3fv((height_vec - top_border_height).mV);

                glTexCoord2f(border_scale.mV[VX], 1.f - border_scale.mV[VY]);
                glVertex3fv((left_border_width + height_vec - top_border_height).mV);

                glTexCoord2f(border_scale.mV[VX], 1.f);
                glVertex3fv((left_border_width + height_vec).mV);

                glTexCoord2f(0.f, 1.f);
                glVertex3fv((height_vec).mV);

                // draw top middle
                glTexCoord2f(border_scale.mV[VX], 1.f - border_scale.mV[VY]);
                glVertex3fv((left_border_width + height_vec - top_border_height).mV);

                glTexCoord2f(1.f - border_scale.mV[VX], 1.f - border_scale.mV[VY]);
                glVertex3fv((width_vec - right_border_width + height_vec - top_border_height).mV);

                glTexCoord2f(1.f - border_scale.mV[VX], 1.f);
                glVertex3fv((width_vec - right_border_width + height_vec).mV);

                glTexCoord2f(border_scale.mV[VX], 1.f);
                glVertex3fv((left_border_width + height_vec).mV);

                // draw top right
                glTexCoord2f(1.f - border_scale.mV[VX], 1.f - border_scale.mV[VY]);
                glVertex3fv((width_vec - right_border_width + height_vec - top_border_height).mV);

                glTexCoord2f(1.f, 1.f - border_scale.mV[VY]);
                glVertex3fv((width_vec + height_vec - top_border_height).mV);

                glTexCoord2f(1.f, 1.f);
                glVertex3fv((width_vec + height_vec).mV);

                glTexCoord2f(1.f - border_scale.mV[VX], 1.f);
                glVertex3fv((width_vec - right_border_width + height_vec).mV);
        }
        glEnd();
}

void gl_segmented_rect_3d_tex_top(const LLVector2& border_scale, const LLVector3& border_width, const LLVector3& border_height, const LLVector3& width_vec, const LLVector3& height_vec)
{
        gl_segmented_rect_3d_tex(border_scale, border_width, border_height, width_vec, height_vec, ROUNDED_RECT_TOP);
}

class LLShowXUINamesListener: public LLSimpleListener
{
        bool handleEvent(LLPointer<LLEvent> event, const LLSD& userdata)
        {
                LLUI::sShowXUINames = (BOOL) event->getValue().asBoolean();
                return true;
        }
};
static LLShowXUINamesListener show_xui_names_listener;


void LLUI::initClass(LLControlGroup* config, 
                                         LLControlGroup* colors, 
                                         LLControlGroup* assets, 
                                         LLImageProviderInterface* image_provider,
                                         LLUIAudioCallback audio_callback,
                                         const LLVector2* scale_factor,
                                         const LLString& language)
{
        sConfigGroup = config;
        sColorsGroup = colors;
        sAssetsGroup = assets;
        sImageProvider = image_provider;
        sAudioCallback = audio_callback;
        sGLScaleFactor = (scale_factor == NULL) ? LLVector2(1.f, 1.f) : *scale_factor;
        sWindow = NULL; // set later in startup
        LLFontGL::sShadowColor = colors->getColor("ColorDropShadow");

        LLUI::sShowXUINames = LLUI::sConfigGroup->getBOOL("ShowXUINames");
        LLUI::sConfigGroup->getControl("ShowXUINames")->addListener(&show_xui_names_listener);
}

void LLUI::cleanupClass()
{
}


//static
void LLUI::translate(F32 x, F32 y, F32 z)
{
        glTranslatef(x,y,z);
        LLFontGL::sCurOrigin.mX += (S32) x;
        LLFontGL::sCurOrigin.mY += (S32) y;
        LLFontGL::sCurOrigin.mZ += z;
}

//static
void LLUI::pushMatrix()
{
        glPushMatrix();
        LLFontGL::sOriginStack.push_back(LLFontGL::sCurOrigin);
}

//static
void LLUI::popMatrix()
{
        glPopMatrix();
        LLFontGL::sCurOrigin = *LLFontGL::sOriginStack.rbegin();
        LLFontGL::sOriginStack.pop_back();
}

//static 
void LLUI::loadIdentity()
{
        glLoadIdentity();
        LLFontGL::sCurOrigin.mX = 0;
        LLFontGL::sCurOrigin.mY = 0;
        LLFontGL::sCurOrigin.mZ = 0;
}

//static 
void LLUI::setScissorRegionScreen(const LLRect& rect)
{
        stop_glerror();
        S32 x,y,w,h;
        x = llround(rect.mLeft * LLUI::sGLScaleFactor.mV[VX]);
        y = llround(rect.mBottom * LLUI::sGLScaleFactor.mV[VY]);
        w = llround(rect.getWidth() * LLUI::sGLScaleFactor.mV[VX]);
        h = llround(rect.getHeight() * LLUI::sGLScaleFactor.mV[VY]);
        glScissor( x,y,w,h );
        stop_glerror();
}

//static
void LLUI::setScissorRegionLocal(const LLRect& rect)
{
        stop_glerror();
        S32 screen_left = LLFontGL::sCurOrigin.mX + rect.mLeft;
        S32 screen_bottom = LLFontGL::sCurOrigin.mY + rect.mBottom;
        
        S32 x,y,w,h;
        
        x = llround((F32)screen_left * LLUI::sGLScaleFactor.mV[VX]);
        y = llround((F32)screen_bottom * LLUI::sGLScaleFactor.mV[VY]);
        w = llround((F32)rect.getWidth() * LLUI::sGLScaleFactor.mV[VX]);
        h = llround((F32)rect.getHeight() * LLUI::sGLScaleFactor.mV[VY]);
        
        w = llmax(0,w);
        h = llmax(0,h);
        
        glScissor(x,y,w,h);
        stop_glerror();
}

//static
void LLUI::setScaleFactor(const LLVector2 &scale_factor)
{
        sGLScaleFactor = scale_factor;
}

//static
void LLUI::setLineWidth(F32 width)
{
        glLineWidth(width * lerp(sGLScaleFactor.mV[VX], sGLScaleFactor.mV[VY], 0.5f));
}

//static 
void LLUI::setCursorPositionScreen(S32 x, S32 y)
{
        S32 screen_x, screen_y;
        screen_x = llround((F32)x * sGLScaleFactor.mV[VX]);
        screen_y = llround((F32)y * sGLScaleFactor.mV[VY]);
        
        LLCoordWindow window_point;
        LLView::getWindow()->convertCoords(LLCoordGL(screen_x, screen_y), &window_point);

        LLView::getWindow()->setCursorPosition(window_point);
}

//static 
void LLUI::setCursorPositionLocal(LLView* viewp, S32 x, S32 y)
{
        S32 screen_x, screen_y;
        viewp->localPointToScreen(x, y, &screen_x, &screen_y);

        setCursorPositionScreen(screen_x, screen_y);
}

//static
LLString LLUI::locateSkin(const LLString& filename)
{
        LLString slash = gDirUtilp->getDirDelimiter();
        LLString found_file = filename;
        if (!gDirUtilp->fileExists(found_file))
        {
                found_file = gDirUtilp->getExpandedFilename(LL_PATH_USER_SETTINGS, filename); // Should be CUSTOM_SKINS?
        }
        if (sConfigGroup && sConfigGroup->controlExists("Language"))
        {
                if (!gDirUtilp->fileExists(found_file))
                {
                        LLString localization(sConfigGroup->getString("Language"));             
                        if(localization == "default")
                        {
                                localization = sConfigGroup->getString("SystemLanguage");
                        }
                        LLString local_skin = "xui" + slash + localization + slash + filename;
                        found_file = gDirUtilp->getExpandedFilename(LL_PATH_SKINS, local_skin);
                }
        }
        if (!gDirUtilp->fileExists(found_file))
        {
                LLString local_skin = "xui" + slash + "en-us" + slash + filename;
                found_file = gDirUtilp->getExpandedFilename(LL_PATH_SKINS, local_skin);
        }
        if (!gDirUtilp->fileExists(found_file))
        {
                found_file = gDirUtilp->getExpandedFilename(LL_PATH_APP_SETTINGS, filename);
        }
        return found_file;
}       

//static
LLVector2 LLUI::getWindowSize()
{
        LLCoordWindow window_rect;
        sWindow->getSize(&window_rect);

        return LLVector2(window_rect.mX / sGLScaleFactor.mV[VX], window_rect.mY / sGLScaleFactor.mV[VY]);
}

//static
LLUUID                  LLUI::findAssetUUIDByName(const LLString        &asset_name)
{
        if(asset_name == LLString::null) return LLUUID::null;
        LLString        foundValue = LLUI::sConfigGroup->findString(asset_name);
        if(foundValue==LLString::null)
        {
                foundValue = LLUI::sAssetsGroup->findString(asset_name);
        }
        if(foundValue == LLString::null){
                return LLUUID::null;
        }
        return LLUUID( foundValue );
}

// static 
void LLUI::setHtmlHelp(LLHtmlHelp* html_help)
{
        LLUI::sHtmlHelp = html_help;
}

//static 
void LLUI::pushClipRect(const LLRect& rect)
{
        LLRect combined_clip_rect = rect;
        if (!sClipRectStack.empty())
        {
                combined_clip_rect.intersectWith(sClipRectStack.top());
        }
        sClipRectStack.push(combined_clip_rect);
        setScissorRegionScreen(combined_clip_rect);
}

//static 
void LLUI::popClipRect()
{
        sClipRectStack.pop();
        if (!sClipRectStack.empty())
        {
                setScissorRegionScreen(sClipRectStack.top());
        }
}

LLClipRect::LLClipRect(const LLRect& rect, BOOL enabled) : mScissorState(GL_SCISSOR_TEST, enabled), mEnabled(enabled)
{
        if (mEnabled)
        {
                LLUI::pushClipRect(rect);
        }
}

LLClipRect::~LLClipRect()
{
        if (mEnabled)
        {
                LLUI::popClipRect();
        }
}

LLLocalClipRect::LLLocalClipRect(const LLRect &rect, BOOL enabled) : mScissorState(GL_SCISSOR_TEST, enabled), mEnabled(enabled)
{
        if (mEnabled)
        {
                LLRect scissor_rect = rect;
                scissor_rect.translate(LLFontGL::sCurOrigin.mX, LLFontGL::sCurOrigin.mY);
                LLUI::pushClipRect(scissor_rect);
        }
}

LLLocalClipRect::~LLLocalClipRect()
{
        if (mEnabled)
        {
                LLUI::popClipRect();
        }
}

---