// Sets the image height and width to fit the alt text. Returns true if the
// image size changed.
bool RenderImage::setImageSizeForAltText(CachedImage* newImage /* = 0 */)
{
IntSize imageSize;
if (newImage && newImage->image())
imageSize = imageSizeForError(newImage);
else if (!m_altText.isEmpty() || newImage) {
// If we'll be displaying either text or an image, add a little padding.
imageSize = IntSize(paddingWidth, paddingHeight);
}
// we have an alt and the user meant it (its not a text we invented)
if (!m_altText.isEmpty()) {
FontCachePurgePreventer fontCachePurgePreventer;
const Font& font = style()->font();
IntSize textSize(min(font.width(RenderBlock::constructTextRun(this, font, m_altText, style())), maxAltTextWidth), min(font.fontMetrics().height(), maxAltTextHeight));
imageSize = imageSize.expandedTo(textSize);
}
if (imageSize == intrinsicSize())
return false;
setIntrinsicSize(imageSize);
return true;
}
bool EGLImageLayerWebKitThread::createImageIfNeeded(const IntSize& size)
{
// We use a texture rather than a renderbuffer as the basis of the FBO and EGLImage,
// since the EGLImage will be used as a texture on the compositing thread in the end.
if (!m_frontBufferTexture) {
glGenTextures(1, &m_frontBufferTexture);
glBindTexture(GL_TEXTURE_2D, m_frontBufferTexture);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
if (!m_fbo)
glGenFramebuffers(1, &m_fbo);
if (!m_image || size != m_size) {
IntSize fboSize = size;
// Imagination-specific fix
static bool isImaginationHardware = std::strstr(reinterpret_cast<const char*>(glGetString(GL_RENDERER)), "PowerVR SGX");
if (isImaginationHardware)
fboSize = fboSize.expandedTo(IntSize(16, 16));
glBindTexture(GL_TEXTURE_2D, m_frontBufferTexture);
glBindFramebuffer(GL_FRAMEBUFFER, m_fbo);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, fboSize.width(), fboSize.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_frontBufferTexture, 0);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
return false;
if (glGetError() != GL_NO_ERROR)
return false;
// The sibling is orphaned after glTexImage2D, recreate the image.
if (m_image)
m_garbage.append(m_image);
m_image = eglCreateImageKHR(BlackBerry::Platform::Graphics::eglDisplay(), eglGetCurrentContext(),
EGL_GL_TEXTURE_2D_KHR, (EGLClientBuffer)m_frontBufferTexture, 0);
if (!m_image)
return false;
m_size = size;
}
return true;
}
IntPoint VisualViewport::clampDocumentOffsetAtScale(const IntPoint& offset,
float scale) {
if (!mainFrame() || !mainFrame()->view())
return IntPoint();
FrameView* view = mainFrame()->view();
FloatSize scaledSize(m_size);
scaledSize.scale(1 / scale);
IntSize visualViewportMax =
flooredIntSize(FloatSize(contentsSize()) - scaledSize);
IntSize max = view->maximumScrollOffsetInt() + visualViewportMax;
IntSize min =
view->minimumScrollOffsetInt(); // VisualViewportMin should be (0, 0)
IntSize clamped = toIntSize(offset);
clamped = clamped.shrunkTo(max);
clamped = clamped.expandedTo(min);
return IntPoint(clamped);
}
// Sets the image height and width to fit the alt text. Returns true if the
// image size changed.
ImageSizeChangeType RenderImage::setImageSizeForAltText(CachedImage* newImage /* = 0 */)
{
IntSize imageSize;
if (newImage && newImage->imageForRenderer(this))
imageSize = imageSizeForError(newImage);
else if (!m_altText.isEmpty() || newImage) {
// If we'll be displaying either text or an image, add a little padding.
imageSize = IntSize(paddingWidth, paddingHeight);
}
// we have an alt and the user meant it (its not a text we invented)
if (!m_altText.isEmpty()) {
const FontCascade& font = style().fontCascade();
IntSize paddedTextSize(paddingWidth + std::min(ceilf(font.width(RenderBlock::constructTextRun(this, font, m_altText, style()))), maxAltTextWidth), paddingHeight + std::min(font.fontMetrics().height(), maxAltTextHeight));
imageSize = imageSize.expandedTo(paddedTextSize);
}
if (imageSize == intrinsicSize())
return ImageSizeChangeNone;
setIntrinsicSize(imageSize);
return ImageSizeChangeForAltText;
}