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https://github.com/LadybirdBrowser/ladybird.git
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830a57c6b2
Let's rename this to LibWeb since it aims to provide more parts of the web platform than just HTML. :^)
90 lines
3.3 KiB
C++
90 lines
3.3 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <LibGfx/Font.h>
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#include <LibGfx/StylePainter.h>
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#include <LibGUI/Painter.h>
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#include <LibWeb/Layout/LayoutImage.h>
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namespace Web {
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LayoutImage::LayoutImage(const HTMLImageElement& element, NonnullRefPtr<StyleProperties> style)
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: LayoutReplaced(element, move(style))
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{
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}
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LayoutImage::~LayoutImage()
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{
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}
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void LayoutImage::layout()
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{
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if (node().preferred_width() && node().preferred_height()) {
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rect().set_width(node().preferred_width());
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rect().set_height(node().preferred_height());
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} else if (renders_as_alt_text()) {
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auto& font = Gfx::Font::default_font();
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auto alt = node().alt();
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if (alt.is_empty())
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alt = node().src();
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rect().set_width(font.width(alt) + 16);
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rect().set_height(font.glyph_height() + 16);
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} else {
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rect().set_width(16);
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rect().set_height(16);
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}
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LayoutReplaced::layout();
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}
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void LayoutImage::render(RenderingContext& context)
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{
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if (!is_visible())
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return;
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// FIXME: This should be done at a different level. Also rect() does not include padding etc!
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if (!context.viewport_rect().intersects(enclosing_int_rect(rect())))
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return;
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if (renders_as_alt_text()) {
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context.painter().set_font(Gfx::Font::default_font());
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Gfx::StylePainter::paint_frame(context.painter(), enclosing_int_rect(rect()), context.palette(), Gfx::FrameShape::Container, Gfx::FrameShadow::Sunken, 2);
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auto alt = node().alt();
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if (alt.is_empty())
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alt = node().src();
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context.painter().draw_text(enclosing_int_rect(rect()), alt, Gfx::TextAlignment::Center, style().color_or_fallback(CSS::PropertyID::Color, document(), Color::Black), Gfx::TextElision::Right);
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} else if (node().bitmap())
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context.painter().draw_scaled_bitmap(enclosing_int_rect(rect()), *node().bitmap(), node().bitmap()->rect());
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LayoutReplaced::render(context);
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}
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bool LayoutImage::renders_as_alt_text() const
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{
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return !node().image_decoder();
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}
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}
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