bool UniscribeController::shape(const UChar* str, int len, SCRIPT_ITEM item, const Font* fontData,
Vector<WORD>& glyphs, Vector<WORD>& clusters,
Vector<SCRIPT_VISATTR>& visualAttributes)
{
HWndDC hdc;
HFONT oldFont = 0;
HRESULT shapeResult = E_PENDING;
int glyphCount = 0;
if (!fontData)
return false;
do {
shapeResult = ScriptShape(hdc, fontData->scriptCache(), str, len, glyphs.size(), &item.a,
glyphs.data(), clusters.data(), visualAttributes.data(), &glyphCount);
if (shapeResult == E_PENDING) {
// The script cache isn't primed with enough info yet. We need to select our HFONT into
// a DC and pass the DC in to ScriptShape.
ASSERT(!hdc);
hdc.setHWnd(0);
HFONT hfont = fontData->platformData().hfont();
oldFont = (HFONT)SelectObject(hdc, hfont);
} else if (shapeResult == E_OUTOFMEMORY) {
// Need to resize our buffers.
glyphs.resize(glyphs.size() * 2);
visualAttributes.resize(glyphs.size());
}
} while (shapeResult == E_PENDING || shapeResult == E_OUTOFMEMORY);
if (hdc)
SelectObject(hdc, oldFont);
if (FAILED(shapeResult))
return false;
glyphs.shrink(glyphCount);
visualAttributes.shrink(glyphCount);
return true;
}
void PopupMenuWin::paint(const IntRect& damageRect, HDC hdc)
{
if (!m_popup)
return;
if (!m_DC) {
m_DC = adoptGDIObject(::CreateCompatibleDC(HWndDC(m_popup)));
if (!m_DC)
return;
}
if (m_bmp) {
bool keepBitmap = false;
BITMAP bitmap;
if (::GetObject(m_bmp.get(), sizeof(bitmap), &bitmap))
keepBitmap = bitmap.bmWidth == clientRect().width()
&& bitmap.bmHeight == clientRect().height();
if (!keepBitmap)
m_bmp.clear();
}
if (!m_bmp) {
BitmapInfo bitmapInfo = BitmapInfo::createBottomUp(clientRect().size());
void* pixels = 0;
m_bmp = adoptGDIObject(::CreateDIBSection(m_DC.get(), &bitmapInfo, DIB_RGB_COLORS, &pixels, 0, 0));
if (!m_bmp)
return;
::SelectObject(m_DC.get(), m_bmp.get());
}
GraphicsContext context(m_DC.get());
int itemCount = client()->listSize();
// listRect is the damageRect translated into the coordinates of the entire menu list (which is itemCount * m_itemHeight pixels tall)
IntRect listRect = damageRect;
listRect.move(IntSize(0, m_scrollOffset * m_itemHeight));
for (int y = listRect.y(); y < listRect.maxY(); y += m_itemHeight) {
int index = y / m_itemHeight;
Color optionBackgroundColor, optionTextColor;
PopupMenuStyle itemStyle = client()->itemStyle(index);
if (index == focusedIndex()) {
optionBackgroundColor = RenderTheme::defaultTheme()->activeListBoxSelectionBackgroundColor();
optionTextColor = RenderTheme::defaultTheme()->activeListBoxSelectionForegroundColor();
} else {
optionBackgroundColor = itemStyle.backgroundColor();
optionTextColor = itemStyle.foregroundColor();
}
// itemRect is in client coordinates
IntRect itemRect(0, (index - m_scrollOffset) * m_itemHeight, damageRect.width(), m_itemHeight);
// Draw the background for this menu item
if (itemStyle.isVisible())
context.fillRect(itemRect, optionBackgroundColor);
if (client()->itemIsSeparator(index)) {
IntRect separatorRect(itemRect.x() + separatorPadding, itemRect.y() + (itemRect.height() - separatorHeight) / 2, itemRect.width() - 2 * separatorPadding, separatorHeight);
context.fillRect(separatorRect, optionTextColor);
continue;
}
String itemText = client()->itemText(index);
TextRun textRun(itemText, 0, 0, AllowTrailingExpansion, itemStyle.textDirection(), itemStyle.hasTextDirectionOverride());
context.setFillColor(optionTextColor);
FontCascade itemFont = client()->menuStyle().font();
if (client()->itemIsLabel(index)) {
auto d = itemFont.fontDescription();
d.setWeight(d.bolderWeight());
itemFont = FontCascade(d, itemFont.letterSpacing(), itemFont.wordSpacing());
itemFont.update(m_popupClient->fontSelector());
}
// Draw the item text
if (itemStyle.isVisible()) {
int textX = 0;
if (client()->menuStyle().textDirection() == LTR) {
textX = std::max<int>(0, client()->clientPaddingLeft() - client()->clientInsetLeft());
if (RenderTheme::defaultTheme()->popupOptionSupportsTextIndent())
textX += minimumIntValueForLength(itemStyle.textIndent(), itemRect.width());
} else {
textX = itemRect.width() - client()->menuStyle().font().width(textRun);
textX = std::min<int>(textX, textX - client()->clientPaddingRight() + client()->clientInsetRight());
if (RenderTheme::defaultTheme()->popupOptionSupportsTextIndent())
textX -= minimumIntValueForLength(itemStyle.textIndent(), itemRect.width());
}
int textY = itemRect.y() + itemFont.fontMetrics().ascent() + (itemRect.height() - itemFont.fontMetrics().height()) / 2;
context.drawBidiText(itemFont, textRun, IntPoint(textX, textY));
}
}
if (m_scrollbar)
m_scrollbar->paint(context, damageRect);
HWndDC hWndDC;
HDC localDC = hdc ? hdc : hWndDC.setHWnd(m_popup);
::BitBlt(localDC, damageRect.x(), damageRect.y(), damageRect.width(), damageRect.height(), m_DC.get(), damageRect.x(), damageRect.y(), SRCCOPY);
}
