mirror of
https://github.com/RGBCube/serenity
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a79bac428b
GApplication now has a palette. This palette contains all the system theme colors by default, and is inherited by a new top-level GWidget. New child widgets inherit their parents palette. It is possible to override the GApplication palette, and the palette of any GWidget. The Palette object contains a bunch of colors, each corresponding to a ColorRole. Each role has a convenience getter as well. Each GWidget now has a background_role() and foreground_role(), which are then looked up in their current palette when painting. This means that you no longer alter the background color of a widget by setting it directly, rather you alter either its background role, or the widget's palette.
115 lines
3 KiB
C++
115 lines
3 KiB
C++
#include "TextWidget.h"
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#include <AK/String.h>
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#include <AK/StringBuilder.h>
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#include <AK/Vector.h>
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#include <LibDraw/Palette.h>
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#include <LibGUI/GPainter.h>
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TextWidget::TextWidget(GWidget* parent)
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: GFrame(parent)
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{
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}
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TextWidget::TextWidget(const StringView& text, GWidget* parent)
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: GFrame(parent)
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, m_text(text)
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{
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}
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TextWidget::~TextWidget()
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{
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}
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void TextWidget::set_text(const StringView& text)
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{
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if (text == m_text)
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return;
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m_text = text;
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wrap_and_set_height();
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update();
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}
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void TextWidget::paint_event(GPaintEvent& event)
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{
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GFrame::paint_event(event);
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GPainter painter(*this);
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painter.add_clip_rect(event.rect());
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int indent = 0;
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if (frame_thickness() > 0)
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indent = font().glyph_width('x') / 2;
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for (int i = 0; i < m_lines.size(); i++) {
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auto& line = m_lines[i];
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auto text_rect = frame_inner_rect();
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text_rect.move_by(indent, i * m_line_height);
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if (!line.is_empty())
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text_rect.set_width(text_rect.width() - indent * 2);
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if (is_enabled()) {
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painter.draw_text(text_rect, line, m_text_alignment, palette().color(foreground_role()), TextElision::None);
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} else {
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painter.draw_text(text_rect.translated(1, 1), line, font(), text_alignment(), Color::White, TextElision::Right);
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painter.draw_text(text_rect, line, font(), text_alignment(), Color::from_rgb(0x808080), TextElision::Right);
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}
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}
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}
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void TextWidget::resize_event(GResizeEvent& event)
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{
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wrap_and_set_height();
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GWidget::resize_event(event);
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}
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void TextWidget::wrap_and_set_height()
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{
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Vector<String> words;
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Optional<size_t> start;
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for (size_t i = 0; i < m_text.length(); i++) {
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auto ch = m_text[i];
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if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n') {
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if (start.has_value())
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words.append(m_text.substring(start.value(), i - start.value()));
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start = -1;
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} else if (!start.has_value()) {
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start = i;
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}
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}
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if (start.has_value())
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words.append(m_text.substring(start, m_text.length() - start.value()));
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auto rect = frame_inner_rect();
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if (frame_thickness() > 0)
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rect.set_width(rect.width() - font().glyph_width('x'));
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StringBuilder builder;
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Vector<String> lines;
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int line_width = 0;
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for (auto& word : words) {
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int word_width = font().width(word);
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if (line_width != 0)
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word_width += font().glyph_width('x');
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if (line_width + word_width > rect.width()) {
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lines.append(builder.to_string());
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line_width = 0;
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}
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if (line_width != 0)
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builder.append(' ');
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builder.append(word);
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line_width += word_width;
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}
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auto last_line = builder.to_string();
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if (!last_line.is_empty()) {
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lines.append(last_line);
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}
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m_lines = lines;
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set_size_policy(SizePolicy::Fill, SizePolicy::Fixed);
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set_preferred_size(0, m_lines.size() * m_line_height + frame_thickness() * 2);
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}
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