void SVGInlineTextBox::paintTextWithShadows(GraphicsContext* context, RenderStyle* style, TextRun& textRun, const SVGTextFragment& fragment, int startPosition, int endPosition)
{
const Font& font = style->font();
const ShadowData* shadow = style->textShadow();
FloatPoint textOrigin(fragment.x, fragment.y);
FloatRect shadowRect(FloatPoint(textOrigin.x(), textOrigin.y() - font.fontMetrics().ascent()), FloatSize(fragment.width, fragment.height));
do {
if (!prepareGraphicsContextForTextPainting(context, textRun, style))
break;
FloatSize extraOffset;
if (shadow)
extraOffset = applyShadowToGraphicsContext(context, shadow, shadowRect, false /* stroked */, true /* opaque */, true /* horizontal */);
font.drawText(context, textRun, textOrigin + extraOffset, startPosition, endPosition);
restoreGraphicsContextAfterTextPainting(context, textRun);
if (!shadow)
break;
if (shadow->next())
context->restore();
else
context->clearShadow();
shadow = shadow->next();
} while (shadow);
}
void SVGInlineTextBox::paintTextWithShadows(GraphicsContext* context, RenderStyle* style, TextRun& textRun, const SVGTextFragment& fragment, int startPosition, int endPosition)
{
RenderSVGInlineText* textRenderer = toRenderSVGInlineText(this->textRenderer());
ASSERT(textRenderer);
float scalingFactor = textRenderer->scalingFactor();
ASSERT(scalingFactor);
const Font& scaledFont = textRenderer->scaledFont();
const ShadowData* shadow = style->textShadow();
FloatPoint textOrigin(fragment.x, fragment.y);
FloatSize textSize(fragment.width, fragment.height);
if (scalingFactor != 1) {
textOrigin.scale(scalingFactor, scalingFactor);
textSize.scale(scalingFactor);
}
FloatRect shadowRect(FloatPoint(textOrigin.x(), textOrigin.y() - scaledFont.fontMetrics().floatAscent()), textSize);
do {
if (!prepareGraphicsContextForTextPainting(context, scalingFactor, textRun, style))
break;
FloatSize extraOffset;
if (shadow)
extraOffset = applyShadowToGraphicsContext(context, shadow, shadowRect, false /* stroked */, true /* opaque */, true /* horizontal */);
AffineTransform originalTransform;
if (scalingFactor != 1) {
originalTransform = context->getCTM();
AffineTransform newTransform = originalTransform;
newTransform.scale(1 / scalingFactor);
normalizeTransform(newTransform);
context->setCTM(newTransform);
}
scaledFont.drawText(context, textRun, textOrigin + extraOffset, startPosition, endPosition);
if (scalingFactor != 1)
context->setCTM(originalTransform);
restoreGraphicsContextAfterTextPainting(context, textRun);
if (!shadow)
break;
if (shadow->next())
context->restore();
else
context->clearShadow();
shadow = shadow->next();
} while (shadow);
}
void OverscrollTheme::updateOverhangShadowLayer(GraphicsLayer* shadowLayer, GraphicsLayer* rootContentLayer)
{
// Note that for the position, the division m_overhangShadow->width() / 2 is an intentional
// round-down, and that for the width and height, the 1-pixel aperture is being replaced
// by the root contents layer, hence subtracting 1 and adding the rootContentsLayer size.
IntRect shadowRect(
static_cast<int>(rootContentLayer->position().x()) - m_overhangShadow->width() / 2,
static_cast<int>(rootContentLayer->position().y()) - m_overhangShadow->height() / 2,
static_cast<int>(rootContentLayer->size().width()) + m_overhangShadow->width() - 1,
static_cast<int>(rootContentLayer->size().height()) + m_overhangShadow->height() - 1);
shadowLayer->setContentsRect(shadowRect);
}
void SVGInlineTextBox::paintTextWithShadows(GraphicsContext* context, RenderStyle* style, TextRun& textRun, const SVGTextFragment& fragment, int startPosition, int endPosition)
{
float scalingFactor = renderer().scalingFactor();
ASSERT(scalingFactor);
const Font& scaledFont = renderer().scaledFont();
const ShadowData* shadow = style->textShadow();
FloatPoint textOrigin(fragment.x, fragment.y);
FloatSize textSize(fragment.width, fragment.height);
if (scalingFactor != 1) {
textOrigin.scale(scalingFactor, scalingFactor);
textSize.scale(scalingFactor);
}
FloatRect shadowRect(FloatPoint(textOrigin.x(), textOrigin.y() - scaledFont.fontMetrics().floatAscent()), textSize);
do {
if (!prepareGraphicsContextForTextPainting(context, scalingFactor, textRun, style))
break;
FloatSize extraOffset;
bool didSaveContext = false;
if (shadow)
extraOffset = applyShadowToGraphicsContext(context, shadow, shadowRect, false /* stroked */, true /* opaque */, true /* horizontal */, didSaveContext);
context->save();
context->scale(FloatSize(1 / scalingFactor, 1 / scalingFactor));
scaledFont.drawText(context, textRun, textOrigin + extraOffset, startPosition, endPosition);
context->restore();
if (shadow) {
if (didSaveContext)
context->restore();
else
context->clearShadow();
}
restoreGraphicsContextAfterTextPainting(context, textRun);
if (!shadow)
break;
shadow = shadow->next();
} while (shadow);
}
void nsTextBoxFrame::PaintOneShadow(gfxContext* aCtx,
const nsRect& aTextRect,
nsCSSShadowItem* aShadowDetails,
const nscolor& aForegroundColor,
const nsRect& aDirtyRect) {
nsPoint shadowOffset(aShadowDetails->mXOffset,
aShadowDetails->mYOffset);
nscoord blurRadius = NS_MAX(aShadowDetails->mRadius, 0);
nsRect shadowRect(aTextRect);
shadowRect.MoveBy(shadowOffset);
nsContextBoxBlur contextBoxBlur;
gfxContext* shadowContext = contextBoxBlur.Init(shadowRect, 0, blurRadius,
PresContext()->AppUnitsPerDevPixel(),
aCtx, aDirtyRect, nsnull);
if (!shadowContext)
return;
nscolor shadowColor;
if (aShadowDetails->mHasColor)
shadowColor = aShadowDetails->mColor;
else
shadowColor = aForegroundColor;
// Conjure an nsIRenderingContext from a gfxContext for DrawText
nsCOMPtr<nsIRenderingContext> renderingContext = nsnull;
nsIDeviceContext* devCtx = PresContext()->DeviceContext();
devCtx->CreateRenderingContextInstance(*getter_AddRefs(renderingContext));
if (!renderingContext)
return;
renderingContext->Init(devCtx, shadowContext);
aCtx->Save();
aCtx->NewPath();
aCtx->SetColor(gfxRGBA(shadowColor));
// Draw the text onto our alpha-only surface to capture the alpha values.
// Remember that the box blur context has a device offset on it, so we don't need to
// translate any coordinates to fit on the surface.
DrawText(*renderingContext, shadowRect, &shadowColor);
contextBoxBlur.DoPaint();
aCtx->Restore();
}
void SVGInlineTextBox::paintTextWithShadows(GraphicsContext& context, RenderStyle* style, TextRun& textRun, const SVGTextFragment& fragment, int startPosition, int endPosition)
{
float scalingFactor = renderer().scalingFactor();
ASSERT(scalingFactor);
const FontCascade& scaledFont = renderer().scaledFont();
const ShadowData* shadow = style->textShadow();
FloatPoint textOrigin(fragment.x, fragment.y);
FloatSize textSize(fragment.width, fragment.height);
if (scalingFactor != 1) {
textOrigin.scale(scalingFactor, scalingFactor);
textSize.scale(scalingFactor);
}
FloatRect shadowRect(FloatPoint(textOrigin.x(), textOrigin.y() - scaledFont.fontMetrics().floatAscent()), textSize);
GraphicsContext* usedContext = &context;
do {
if (!prepareGraphicsContextForTextPainting(usedContext, scalingFactor, textRun, style))
break;
{
ShadowApplier shadowApplier(*usedContext, shadow, shadowRect);
if (!shadowApplier.didSaveContext())
usedContext->save();
usedContext->scale(FloatSize(1 / scalingFactor, 1 / scalingFactor));
scaledFont.drawText(*usedContext, textRun, textOrigin + shadowApplier.extraOffset(), startPosition, endPosition);
if (!shadowApplier.didSaveContext())
usedContext->restore();
}
restoreGraphicsContextAfterTextPainting(usedContext, textRun);
if (!shadow)
break;
shadow = shadow->next();
} while (shadow);
}
static void paintTextWithShadows(GraphicsContext* context, const TextRun& textRun, int startOffset, int endOffset, const IntPoint& textOrigin, int x, int y, int w, int h, ShadowData* shadow, bool stroked)
{
do {
IntSize extraOffset;
if (shadow) {
IntSize shadowOffset(shadow->x, shadow->y);
int shadowBlur = shadow->blur;
const Color& shadowColor = shadow->color;
if (shadow->next || stroked) {
IntRect shadowRect(x, y, w, h);
shadowRect.inflate(shadowBlur);
shadowRect.move(shadowOffset);
context->save();
context->clip(shadowRect);
extraOffset = IntSize(0, 2 * h + max(0, shadowOffset.height()) + shadowBlur);
shadowOffset -= extraOffset;
}
context->setShadow(shadowOffset, shadowBlur, shadowColor);
}
if (startOffset <= endOffset)
context->drawText(textRun, textOrigin + extraOffset, startOffset, endOffset);
else {
if (endOffset > 0)
context->drawText(textRun, textOrigin + extraOffset, 0, endOffset);
if (startOffset < textRun.length())
context->drawText(textRun, textOrigin + extraOffset, startOffset);
}
if (!shadow)
break;
if (shadow->next || stroked)
context->restore();
else
context->clearShadow();
shadow = shadow->next;
} while (shadow || stroked);
}
bool RenderThemeGtk::paintTextField(RenderObject* renderObject, const PaintInfo& info, const IntRect& rect)
{
GtkWidget* widget = gtkEntry();
bool enabled = isEnabled(renderObject) && !isReadOnlyControl(renderObject);
GtkStateType backgroundState = enabled ? GTK_STATE_NORMAL : GTK_STATE_INSENSITIVE;
gtk_widget_set_sensitive(widget, enabled);
gtk_widget_set_direction(widget, gtkTextDirection(renderObject->style().direction()));
setWidgetHasFocus(widget, isFocused(renderObject));
WidgetRenderingContext widgetContext(info.context, rect);
IntRect textFieldRect(IntPoint(), rect.size());
// The entry background is only painted over the interior part of the GTK+ entry, not
// the entire frame. This happens in the Mozilla theme drawing code as well.
IntRect interiorRect(textFieldRect);
GtkStyle* style = gtk_widget_get_style(widget);
interiorRect.inflateX(-style->xthickness);
interiorRect.inflateY(-style->ythickness);
widgetContext.gtkPaintFlatBox(interiorRect, widget, backgroundState, GTK_SHADOW_NONE, "entry_bg");
// This is responsible for drawing the actual frame.
widgetContext.gtkPaintShadow(textFieldRect, widget, GTK_STATE_NORMAL, GTK_SHADOW_IN, "entry");
gboolean interiorFocus;
gint focusWidth;
gtk_widget_style_get(widget,
"interior-focus", &interiorFocus,
"focus-line-width", &focusWidth, NULL);
if (isFocused(renderObject) && !interiorFocus) {
// When GTK+ paints a text entry with focus, it shrinks the size of the frame area by the
// focus width and paints over the previously unfocused text entry. We need to emulate that
// by drawing both the unfocused frame above and the focused frame here.
IntRect shadowRect(textFieldRect);
shadowRect.inflate(-focusWidth);
widgetContext.gtkPaintShadow(shadowRect, widget, GTK_STATE_NORMAL, GTK_SHADOW_IN, "entry");
widgetContext.gtkPaintFocus(textFieldRect, widget, GTK_STATE_NORMAL, "entry");
}
return false;
}
ShadowApplier::ShadowApplier(GraphicsContext& context, const ShadowData* shadow, const FloatRect& textRect, bool lastShadowIterationShouldDrawText, bool opaque, FontOrientation orientation)
: m_context(context)
, m_shadow(shadow)
, m_onlyDrawsShadow(!isLastShadowIteration() || !lastShadowIterationShouldDrawText)
, m_avoidDrawingShadow(shadowIsCompletelyCoveredByText(opaque))
, m_nothingToDraw(shadow && m_avoidDrawingShadow && m_onlyDrawsShadow)
, m_didSaveContext(false)
{
if (!shadow || m_nothingToDraw) {
m_shadow = nullptr;
return;
}
int shadowX = orientation == Horizontal ? shadow->x() : shadow->y();
int shadowY = orientation == Horizontal ? shadow->y() : -shadow->x();
FloatSize shadowOffset(shadowX, shadowY);
int shadowRadius = shadow->radius();
const Color& shadowColor = shadow->color();
// When drawing shadows, we usually clip the context to the area the shadow will reside, and then
// draw the text itself outside the clipped area (so only the shadow shows up). However, we can
// often draw the *last* shadow and the text itself in a single call.
if (m_onlyDrawsShadow) {
FloatRect shadowRect(textRect);
shadowRect.inflate(shadow->paintingExtent());
shadowRect.move(shadowOffset);
context.save();
context.clip(shadowRect);
m_didSaveContext = true;
m_extraOffset = FloatSize(0, 2 * textRect.height() + std::max(0.0f, shadowOffset.height()) + shadowRadius);
shadowOffset -= m_extraOffset;
}
if (!m_avoidDrawingShadow)
context.setShadow(shadowOffset, shadowRadius, shadowColor, context.fillColorSpace());
}
void InlineTextBox::paintDecoration(GraphicsContext* context, int tx, int ty, int deco, ShadowData* shadow)
{
tx += m_x;
ty += m_y;
if (m_truncation == cFullTruncation)
return;
int width = (m_truncation == cNoTruncation) ? m_width
: static_cast<RenderText*>(m_object)->width(m_start, m_truncation, textPos(), m_firstLine);
// Get the text decoration colors.
Color underline, overline, linethrough;
object()->getTextDecorationColors(deco, underline, overline, linethrough, true);
// Use a special function for underlines to get the positioning exactly right.
bool isPrinting = textObject()->document()->printing();
context->setStrokeThickness(1.0f); // FIXME: We should improve this rule and not always just assume 1.
bool linesAreOpaque = !isPrinting && (!(deco & UNDERLINE) || underline.alpha() == 255) && (!(deco & OVERLINE) || overline.alpha() == 255) && (!(deco & LINE_THROUGH) || linethrough.alpha() == 255);
bool setClip = false;
int extraOffset = 0;
if (!linesAreOpaque && shadow && shadow->next) {
context->save();
IntRect clipRect(tx, ty, width, m_baseline + 2);
for (ShadowData* s = shadow; s; s = s->next) {
IntRect shadowRect(tx, ty, width, m_baseline + 2);
shadowRect.inflate(s->blur);
shadowRect.move(s->x, s->y);
clipRect.unite(shadowRect);
extraOffset = max(extraOffset, max(0, s->y) + s->blur);
}
context->save();
context->clip(clipRect);
extraOffset += m_baseline + 2;
ty += extraOffset;
setClip = true;
}
bool setShadow = false;
do {
if (shadow) {
if (!shadow->next) {
// The last set of lines paints normally inside the clip.
ty -= extraOffset;
extraOffset = 0;
}
context->setShadow(IntSize(shadow->x, shadow->y - extraOffset), shadow->blur, shadow->color);
setShadow = true;
shadow = shadow->next;
}
if (deco & UNDERLINE) {
context->setStrokeColor(underline);
// Leave one pixel of white between the baseline and the underline.
context->drawLineForText(IntPoint(tx, ty + m_baseline + 1), width, isPrinting);
}
if (deco & OVERLINE) {
context->setStrokeColor(overline);
context->drawLineForText(IntPoint(tx, ty), width, isPrinting);
}
if (deco & LINE_THROUGH) {
context->setStrokeColor(linethrough);
context->drawLineForText(IntPoint(tx, ty + 2 * m_baseline / 3), width, isPrinting);
}
} while (shadow);
if (setClip)
context->restore();
else if (setShadow)
context->clearShadow();
}
void TextDecorationPainter::paintTextDecoration(const TextRun& textRun, const FloatPoint& textOrigin, const FloatPoint& boxOrigin)
{
#if !ENABLE(CSS3_TEXT_DECORATION_SKIP_INK)
UNUSED_PARAM(textRun);
UNUSED_PARAM(textOrigin);
#endif
ASSERT(m_font);
float textDecorationThickness = textDecorationStrokeThickness(m_lineStyle.fontSize());
m_context.setStrokeThickness(textDecorationThickness);
FloatPoint localOrigin = boxOrigin;
auto paintDecoration = [&](TextDecoration decoration, TextDecorationStyle style, const Color& color, const FloatPoint& start, const FloatPoint& end, int offset) {
m_context.setStrokeColor(color);
auto strokeStyle = textDecorationStyleToStrokeStyle(style);
if (style == TextDecorationStyleWavy)
strokeWavyTextDecoration(m_context, start, end, textDecorationThickness);
else if (decoration == TextDecorationUnderline || decoration == TextDecorationOverline) {
#if ENABLE(CSS3_TEXT_DECORATION_SKIP_INK)
if ((m_lineStyle.textDecorationSkip() == TextDecorationSkipInk || m_lineStyle.textDecorationSkip() == TextDecorationSkipAuto) && m_isHorizontal) {
if (!m_context.paintingDisabled())
drawSkipInkUnderline(m_context, *m_font, textRun, textOrigin, localOrigin, offset, m_width, m_isPrinting, style == TextDecorationStyleDouble, strokeStyle);
} else
// FIXME: Need to support text-decoration-skip: none.
#endif
m_context.drawLineForText(start, m_width, m_isPrinting, style == TextDecorationStyleDouble, strokeStyle);
} else {
ASSERT(decoration == TextDecorationLineThrough);
m_context.drawLineForText(start, m_width, m_isPrinting, style == TextDecorationStyleDouble, strokeStyle);
}
};
bool linesAreOpaque = !m_isPrinting
&& (!(m_decoration & TextDecorationUnderline) || m_styles.underlineColor.isOpaque())
&& (!(m_decoration & TextDecorationOverline) || m_styles.overlineColor.isOpaque())
&& (!(m_decoration & TextDecorationLineThrough) || m_styles.linethroughColor.isOpaque());
int extraOffset = 0;
bool clipping = !linesAreOpaque && m_shadow && m_shadow->next();
if (clipping) {
FloatRect clipRect(localOrigin, FloatSize(m_width, m_baseline + 2));
for (const ShadowData* shadow = m_shadow; shadow; shadow = shadow->next()) {
int shadowExtent = shadow->paintingExtent();
FloatRect shadowRect(localOrigin, FloatSize(m_width, m_baseline + 2));
shadowRect.inflate(shadowExtent);
int shadowX = m_isHorizontal ? shadow->x() : shadow->y();
int shadowY = m_isHorizontal ? shadow->y() : -shadow->x();
shadowRect.move(shadowX, shadowY);
clipRect.unite(shadowRect);
extraOffset = std::max(extraOffset, std::max(0, shadowY) + shadowExtent);
}
m_context.save();
m_context.clip(clipRect);
extraOffset += m_baseline + 2;
localOrigin.move(0, extraOffset);
}
const ShadowData* shadow = m_shadow;
do {
if (shadow) {
if (!shadow->next()) {
// The last set of lines paints normally inside the clip.
localOrigin.move(0, -extraOffset);
extraOffset = 0;
}
int shadowX = m_isHorizontal ? shadow->x() : shadow->y();
int shadowY = m_isHorizontal ? shadow->y() : -shadow->x();
m_context.setShadow(FloatSize(shadowX, shadowY - extraOffset), shadow->radius(), shadow->color());
shadow = shadow->next();
}
// These decorations should match the visual overflows computed in visualOverflowForDecorations()
if (m_decoration & TextDecorationUnderline) {
const int offset = computeUnderlineOffset(m_lineStyle.textUnderlinePosition(), m_lineStyle.fontMetrics(), m_inlineTextBox, textDecorationThickness);
int wavyOffset = m_styles.underlineStyle == TextDecorationStyleWavy ? m_wavyOffset : 0;
FloatPoint start = localOrigin + FloatSize(0, offset + wavyOffset);
FloatPoint end = localOrigin + FloatSize(m_width, offset + wavyOffset);
paintDecoration(TextDecorationUnderline, m_styles.underlineStyle, m_styles.underlineColor, start, end, offset);
}
if (m_decoration & TextDecorationOverline) {
int wavyOffset = m_styles.overlineStyle == TextDecorationStyleWavy ? m_wavyOffset : 0;
FloatPoint start = localOrigin - FloatSize(0, wavyOffset);
FloatPoint end = localOrigin + FloatSize(m_width, -wavyOffset);
paintDecoration(TextDecorationOverline, m_styles.overlineStyle, m_styles.overlineColor, start, end, 0);
}
if (m_decoration & TextDecorationLineThrough) {
FloatPoint start = localOrigin + FloatSize(0, 2 * m_baseline / 3);
FloatPoint end = localOrigin + FloatSize(m_width, 2 * m_baseline / 3);
paintDecoration(TextDecorationLineThrough, m_styles.linethroughStyle, m_styles.linethroughColor, start, end, 0);
}
} while (shadow);
if (clipping)
m_context.restore();
else if (m_shadow)
m_context.clearShadow();
}
