// Check for:
// SAVE
// CLIP_RECT
// DRAW_RECT
// RESTORE
// where the rect is entirely within the clip and the clip is an intersect
static bool check_2(SkDebugCanvas* canvas, int curCommand) {
if (SAVE != canvas->getDrawCommandAt(curCommand)->getType() ||
canvas->getSize() <= curCommand+4 ||
CLIP_RECT != canvas->getDrawCommandAt(curCommand+1)->getType() ||
DRAW_RECT != canvas->getDrawCommandAt(curCommand+2)->getType() ||
RESTORE != canvas->getDrawCommandAt(curCommand+3)->getType()) {
return false;
}
SkClipRectCommand* cr =
(SkClipRectCommand*) canvas->getDrawCommandAt(curCommand+1);
SkDrawRectCommand* dr =
(SkDrawRectCommand*) canvas->getDrawCommandAt(curCommand+2);
if (SkRegion::kIntersect_Op != cr->op()) {
return false;
}
return cr->rect().contains(dr->rect());
}
// Check for:
// SAVE
// CLIP_RECT
// DRAW_BITMAP_RECT_TO_RECT
// RESTORE
// where the rect and drawBitmapRect dst exactly match
static bool check_4(SkDebugCanvas* canvas, int curCommand) {
if (SAVE != canvas->getDrawCommandAt(curCommand)->getType() ||
canvas->getSize() <= curCommand+4 ||
CLIP_RECT != canvas->getDrawCommandAt(curCommand+1)->getType() ||
DRAW_BITMAP_RECT_TO_RECT != canvas->getDrawCommandAt(curCommand+2)->getType() ||
RESTORE != canvas->getDrawCommandAt(curCommand+3)->getType()) {
return false;
}
SkClipRectCommand* cr =
(SkClipRectCommand*) canvas->getDrawCommandAt(curCommand+1);
SkDrawBitmapRectCommand* dbmr =
(SkDrawBitmapRectCommand*) canvas->getDrawCommandAt(curCommand+2);
if (SkRegion::kIntersect_Op != cr->op()) {
return false;
}
return dbmr->dstRect() == cr->rect();
}
// Check for:
// SAVE
// CLIP_RECT
// DRAW_BITMAP_RECT_TO_RECT
// RESTORE
// where the rect and drawBitmapRect dst exactly match
static bool check_4(SkDebugCanvas* canvas, int curCommand) {
if (SkDrawCommand::kSave_OpType != canvas->getDrawCommandAt(curCommand)->getType() ||
canvas->getSize() <= curCommand+4 ||
SkDrawCommand::kClipRect_OpType != canvas->getDrawCommandAt(curCommand+1)->getType() ||
SkDrawCommand::kDrawBitmapRect_OpType != canvas->getDrawCommandAt(curCommand+2)->getType() ||
SkDrawCommand::kRestore_OpType != canvas->getDrawCommandAt(curCommand+3)->getType()) {
return false;
}
SkClipRectCommand* cr =
(SkClipRectCommand*) canvas->getDrawCommandAt(curCommand+1);
SkDrawBitmapRectCommand* dbmr =
(SkDrawBitmapRectCommand*) canvas->getDrawCommandAt(curCommand+2);
if (SkRegion::kIntersect_Op != cr->op()) {
return false;
}
return dbmr->dstRect() == cr->rect();
}
// Check for:
// SAVE
// CLIP_RECT
// DRAWBITMAPRECTTORECT
// RESTORE
// where:
// the drawBitmapRectToRect is a 1-1 copy from src to dest
// the clip rect is BW and a subset of the drawBitmapRectToRect's dest rect
static bool check_8(SkDebugCanvas* canvas, int curCommand) {
if (SAVE != canvas->getDrawCommandAt(curCommand)->getType() ||
canvas->getSize() <= curCommand+4 ||
CLIP_RECT != canvas->getDrawCommandAt(curCommand+1)->getType() ||
DRAW_BITMAP_RECT_TO_RECT != canvas->getDrawCommandAt(curCommand+2)->getType() ||
RESTORE != canvas->getDrawCommandAt(curCommand+3)->getType()) {
return false;
}
SkClipRectCommand* clip =
(SkClipRectCommand*) canvas->getDrawCommandAt(curCommand+1);
SkDrawBitmapRectCommand* dbmr =
(SkDrawBitmapRectCommand*) canvas->getDrawCommandAt(curCommand+2);
if (clip->doAA() || SkRegion::kIntersect_Op != clip->op()) {
return false;
}
// The src->dest mapping needs to be 1-to-1
if (NULL == dbmr->srcRect()) {
if (dbmr->bitmap().width() != dbmr->dstRect().width() ||
dbmr->bitmap().height() != dbmr->dstRect().height()) {
return false;
}
} else {
if (dbmr->srcRect()->width() != dbmr->dstRect().width() ||
dbmr->srcRect()->height() != dbmr->dstRect().height()) {
return false;
}
}
if (!dbmr->dstRect().contains(clip->rect())) {
return false;
}
return true;
}