void DisplayElement::InvalidateChild (DisplayElement *pChild, WebRect *pDirty)
{
WebRect dirty;
dirty.Set(pDirty);
dirty.Shift(mRect.left, mRect.top);
if (GetOverflow() == DISPLAY_OVERFLOW_HIDDEN)
{
WebRect clipRect;
GetClipRect(&clipRect);
// If completely outside clipping rect, stop here
if (!dirty.Overlaps(&clipRect))
{
return;
}
// clip pDirty to our rect
dirty.And(&clipRect);
}
if ((mFlags & DISPLAY_FLAG_FIXED_POS) || !mpParent)
{
DisplayManager *pManager = GetManager();
if (pManager)
{
if (mFlags & DISPLAY_FLAG_FIXED_POS)
{
dirty.Shift(pManager->mViewRect.left, pManager->mViewRect.top);
}
pManager->InvalidateViewportRegion(&dirty);
}
}
else
{
mpParent->InvalidateChild(this, &dirty);
}
}
void DisplayManager::UpdateScrollBuffer (void)
{
if ((GetManagerFlags() & MANAGER_FLAG_DIRTY) &&
mRoot.Get() &&
mScrollBuffer)
{
WebRect* dirty;
ClearManagerFlag(MANAGER_FLAG_BUFFER_DIRTY);
// move the dirty rectangle list onto the stack so it can't be corrupted
vector dirtyListCopy = mDirtyList;
mDirtyList.first = 0;
mDirtyList.last = 0;
vector_iterator vi;
DISPLAY_INT viewWidth = mViewRect.Width();
DISPLAY_INT viewHeight = mViewRect.Height();
PresetWebRect viewCorner(&mViewRect);
viewCorner.MoveTo(0,0);
PresetWebRect bufferView(&mViewRect);
bufferView.MoveTo(mViewRect.left % viewWidth, mViewRect.top % viewHeight);
DISPLAY_INT bufferLeft = mViewRect.left - (mViewRect.left % viewWidth);
DISPLAY_INT bufferTop = mViewRect.top - (mViewRect.top % viewHeight);
dirty = (WebRect*) vector_get_first(&dirtyListCopy, &vi);
while (dirty)
{
if (mViewRect.Overlaps(dirty))
{
WebRect bufferDirty;
bufferDirty.left = dirty->left - bufferLeft;
bufferDirty.top = dirty->top - bufferTop;
bufferDirty.SizeTo(dirty->Width(), dirty->Height());
bufferDirty.And(&bufferView);
mScrollBuffer->SetClip(&bufferDirty);
DISPLAY_INT x = mRoot.Get()->mRect.left - bufferLeft;
DISPLAY_INT y = mRoot.Get()->mRect.top - bufferTop;
mRoot.Get()->Draw (x, y, &bufferView, mScrollBuffer);
PresetWebRect defaultClip(0, 0, viewWidth * 2 - 1, viewHeight * 2 - 1);
mScrollBuffer->SetClip(&defaultClip);
// copy bufferDirty 3 times, split if necessary
PresetWebRect northwest (0, 0, viewWidth - 1, viewHeight - 1);
PresetWebRect northeast (viewWidth, 0, viewWidth * 2 - 1, viewHeight - 1);
PresetWebRect southeast (viewWidth, viewHeight, viewWidth * 2 - 1, viewHeight * 2 - 1);
PresetWebRect southwest (0, viewHeight, viewWidth - 1, viewHeight * 2 - 1);
if (bufferDirty.Overlaps(&northwest))
{
PresetWebRect copyFrom (&bufferDirty);
copyFrom.And(&northwest);
PresetWebRect copyTo (©From);
copyTo.ShiftOver(mViewRect.Width());
mScrollBuffer->CopyBufferRegion(©To, mScrollBuffer, copyFrom.left, copyFrom.top);
copyTo.ShiftDown(mViewRect.Height());
mScrollBuffer->CopyBufferRegion(©To, mScrollBuffer, copyFrom.left, copyFrom.top);
copyTo.ShiftOver(-mViewRect.Width());
mScrollBuffer->CopyBufferRegion(©To, mScrollBuffer, copyFrom.left, copyFrom.top);
}
if (bufferDirty.Overlaps(&northeast))
{
PresetWebRect copyFrom (&bufferDirty);
copyFrom.And(&northeast);
PresetWebRect copyTo (©From);
copyTo.ShiftDown(mViewRect.Height());
mScrollBuffer->CopyBufferRegion(©To, mScrollBuffer, copyFrom.left, copyFrom.top);
copyTo.ShiftOver(-mViewRect.Width());
mScrollBuffer->CopyBufferRegion(©To, mScrollBuffer, copyFrom.left, copyFrom.top);
copyTo.ShiftDown(-mViewRect.Height());
mScrollBuffer->CopyBufferRegion(©To, mScrollBuffer, copyFrom.left, copyFrom.top);
}
if (bufferDirty.Overlaps(&southeast))
{
PresetWebRect copyFrom (&bufferDirty);
copyFrom.And(&southeast);
PresetWebRect copyTo (©From);
copyTo.ShiftDown(-mViewRect.Height());
mScrollBuffer->CopyBufferRegion(©To, mScrollBuffer, copyFrom.left, copyFrom.top);
copyTo.ShiftOver(-mViewRect.Width());
mScrollBuffer->CopyBufferRegion(©To, mScrollBuffer, copyFrom.left, copyFrom.top);
copyTo.ShiftDown(mViewRect.Height());
mScrollBuffer->CopyBufferRegion(©To, mScrollBuffer, copyFrom.left, copyFrom.top);
}
if (bufferDirty.Overlaps(&southwest))
{
PresetWebRect copyFrom (&bufferDirty);
copyFrom.And(&southwest);
PresetWebRect copyTo (©From);
copyTo.ShiftDown(-mViewRect.Height());
mScrollBuffer->CopyBufferRegion(©To, mScrollBuffer, copyFrom.left, copyFrom.top);
copyTo.ShiftOver(mViewRect.Width());
mScrollBuffer->CopyBufferRegion(©To, mScrollBuffer, copyFrom.left, copyFrom.top);
copyTo.ShiftDown(mViewRect.Height());
mScrollBuffer->CopyBufferRegion(©To, mScrollBuffer, copyFrom.left, copyFrom.top);
}
}
dirty = (WebRect*) vector_get_next(&vi);
}
// this ensures the dirty list is just the same as when we entered
vector_delete(&mDirtyList);
if (!this->GetManager())
{
// if we're the root manager, we'll need this list in a sec.
mDirtyList = dirtyListCopy;
}
else
{
ClearManagerFlag(MANAGER_FLAG_DIRTY);
vector_delete(&dirtyListCopy);
}
}
}
void WebDropBox::DrawThisOnly (DISPLAY_INT x, DISPLAY_INT y, WebGraphics *gc)
{
WEBC_BOOL focused = (mFlags & DISPLAY_FLAG_FOCUS) || (mState == DROPBOX_STATE_DROPPED);
mListbox.CalculateTextMetrics(gc);
WebRect oldClip;
gc->GetClip(&oldClip);
WebRect clip;
clip.top = y;
clip.left = x;
clip.bottom = y + Height() - 1;
clip.right = x + Width() - 1;
clip.And(&oldClip);
gc->SetClip(&clip);
WebRect rect;
rect.top = y;
rect.left = x;
rect.bottom = y + Height() - 1;
rect.right = x + Width() - 1;
// gc->StartBuffer();
WebColor hilite, lolite, blue, white, black;
HTMLColor col = HTML_RGBAToColor(0,0,0,0);
black = hilite = gc->RGBToColor(col);
col = HTML_RGBAToColor(0xff,0xff,0xff,0);
white = lolite = gc->RGBToColor(col);
col = HTML_RGBAToColor(0,0,0xff,0);
blue = gc->RGBToColor(col);
if (focused)
{
gc->Rectangle(&rect, black, black, WEBC_FALSE);
}
GetFrameRect(&rect);
rect.Shift(x,y);
DrawFrame(&rect, gc);
GetContentRect(&rect);
rect.Shift(x,y);
if (focused)
{
gc->Rectangle(&rect, GetSelectColor(gc), GetSelectColor(gc), WEBC_TRUE);
}
else
{
gc->Rectangle(&rect, GetBgColor(gc), GetBgColor(gc), WEBC_TRUE);
}
if (mpText && mFont.GetFont())
{
DISPLAY_INT offset = (rect.Height() - gc->TextHeight(mpText, mFont.GetFont())) / 2;
clip.Set(&rect);
clip.And(&oldClip);
gc->SetClip(&clip);
gc->Text(rect.left + DROPBOX_PADDING,
rect.top + DROPBOX_PADDING + offset,
mpText, (focused) ? GetBgColor(gc) : GetTextColor(gc),
0, WEBC_FALSE, mFont.GetFont());
}
// gc->EndBuffer();
gc->SetClip(&oldClip);
}