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Enabling transparent pulldown/popup menus in Blender. Speed of drawing is

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not affected when using standard (alpha=255) settings.

Only the backdrop for menus and unselected items can be transparent, the
highighted (active) item remains solid colored.

Just fun eyecandy tho :) but the recode of menu enables this easily.
This commit is contained in:
Ton Roosendaal
2004-10-26 12:52:20 +00:00
parent c245379175
commit 15e1671ec5
5 changed files with 1346 additions and 1309 deletions
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43
source/blender/src/interface.c
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@@ -280,6 +280,32 @@ static void ui_flush_overdraw(uiOverDraw *od)
glDrawBuffer(GL_BACK);
}
/* special flush version to enable transparent menus */
static void ui_block_flush_overdraw(uiBlock *block)
{
if(block->flag & UI_BLOCK_LOOP) {
char col[4];
BIF_GetThemeColor4ubv(TH_MENU_BACK, col);
if(col[3]!=255) {
uiBut *bt;
uiOverDraw *od= block->overdraw;
/* completely draw all! */
glRasterPos2s(od->x, od->y);
glDrawPixels(od->sx, od->sy, GL_RGBA, GL_UNSIGNED_BYTE, od->rect);
uiDrawMenuBox(block->minx, block->miny, block->maxx, block->maxy, block->flag);
for (bt= block->buttons.first; bt; bt= bt->next) {
ui_draw_but(bt);
}
}
}
ui_flush_overdraw(block->overdraw);
}
static void ui_end_overdraw(uiOverDraw *od)
{
if(od==NULL) return;
@@ -353,7 +379,7 @@ void ui_block_flush_back(uiBlock *block)
markdirty_win_back(block->win);
}
block->needflush= 0;
}
@@ -378,6 +404,7 @@ void ui_block_set_flush(uiBlock *block, uiBut *but)
block->flush.xmax= but->x2;
block->flush.ymin= but->y1;
block->flush.ymax= but->y2;
}
else {
/* union of rects */
@@ -501,8 +528,8 @@ static void ui_positionblock(uiBlock *block, uiBut *but)
ui_graphics_to_window(block->win, &block->minx, &block->miny);
ui_graphics_to_window(block->win, &block->maxx, &block->maxy);
block->minx-= 2.0; block->miny-= 2.0;
block->maxx+= 2.0; block->maxy+= 2.0;
//block->minx-= 2.0; block->miny-= 2.0;
//block->maxx+= 2.0; block->maxy+= 2.0;
xsize= block->maxx - block->minx+4; // 4 for shadow
ysize= block->maxy - block->miny+4;
@@ -3219,7 +3246,7 @@ static int ui_do_block(uiBlock *block, uiEvent *uevent)
}
/* flush to frontbuffer */
if((block->flag & UI_BLOCK_LOOP)==0) {
if((block->flag & UI_BLOCK_LOOP)==0) { // no loop, might need total flush in uidoblocks()
ui_block_flush_back(block);
}
@@ -3433,7 +3460,7 @@ int uiDoBlocks(ListBase *lb, int event)
*/
if(block->flag & UI_BLOCK_REDRAW) {
if( block->flag & UI_BLOCK_LOOP) {
block->overdraw= ui_begin_overdraw((int)block->minx-1, (int)block->miny-6, (int)block->maxx+6, (int)block->maxy+1);
block->overdraw= ui_begin_overdraw((int)block->minx-1, (int)block->miny-10, (int)block->maxx+10, (int)block->maxy+1);
}
block->in_use= 1; // is always a menu
uiDrawBlock(block);
@@ -3450,7 +3477,7 @@ int uiDoBlocks(ListBase *lb, int event)
/* is there a flush cached? */
if(block->needflush) {
ui_flush_overdraw(block->overdraw);
ui_block_flush_overdraw(block);
block->needflush= 0;
}
@@ -3487,8 +3514,8 @@ int uiDoBlocks(ListBase *lb, int event)
retval= ui_do_block(block, &uevent);
block->in_use= 0;
if(block->needflush) { // flush now, maybe new menu was opened
ui_flush_overdraw(block->overdraw);
if(block->needflush) { // flush (old menu) now, maybe new menu was opened
ui_block_flush_overdraw(block);
block->needflush= 0;
}