ladybird/Userland/Libraries/LibGfx/ClassicWindowTheme.cpp
Andreas Kling 548081ea23 Userland+Base: Make the window titlebar font configurable separately
Instead of defaulting to "bold variant of the system default font",
let's allow the user to set any font they want as the titlebar font.
2022-08-01 10:29:53 +02:00

269 lines
13 KiB
C++

/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021-2022, Filiph Sandström <filiph.sandstrom@filfatstudios.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibGfx/Bitmap.h>
#include <LibGfx/ClassicWindowTheme.h>
#include <LibGfx/Font/FontDatabase.h>
#include <LibGfx/Painter.h>
#include <LibGfx/Palette.h>
#include <LibGfx/StylePainter.h>
namespace Gfx {
static constexpr int menubar_height = 20;
Gfx::IntRect ClassicWindowTheme::titlebar_icon_rect(WindowType window_type, IntRect const& window_rect, Palette const& palette) const
{
if (window_type == WindowType::ToolWindow)
return {};
auto titlebar_rect = this->titlebar_rect(window_type, window_rect, palette);
Gfx::IntRect icon_rect {
titlebar_rect.x() + 2,
titlebar_rect.y(),
16,
16,
};
icon_rect.center_vertically_within(titlebar_rect);
icon_rect.translate_by(0, 1);
return icon_rect;
}
Gfx::IntRect ClassicWindowTheme::titlebar_text_rect(WindowType window_type, IntRect const& window_rect, Palette const& palette) const
{
auto titlebar_rect = this->titlebar_rect(window_type, window_rect, palette);
auto titlebar_icon_rect = this->titlebar_icon_rect(window_type, window_rect, palette);
return {
titlebar_rect.x() + 3 + (titlebar_icon_rect.is_empty() ? 0 : (titlebar_icon_rect.width() + 2)),
titlebar_rect.y(),
titlebar_rect.width() - 5 - (titlebar_icon_rect.is_empty() ? 0 : (titlebar_icon_rect.width() + 2)),
titlebar_rect.height()
};
}
void ClassicWindowTheme::paint_normal_frame(Painter& painter, WindowState window_state, IntRect const& window_rect, StringView window_title, Bitmap const& icon, Palette const& palette, IntRect const& leftmost_button_rect, int menu_row_count, [[maybe_unused]] bool window_modified) const
{
auto frame_rect = frame_rect_for_window(WindowType::Normal, window_rect, palette, menu_row_count);
frame_rect.set_location({ 0, 0 });
Gfx::StylePainter::paint_window_frame(painter, frame_rect, palette);
auto& title_font = FontDatabase::window_title_font();
auto titlebar_rect = this->titlebar_rect(WindowType::Normal, window_rect, palette);
auto titlebar_icon_rect = this->titlebar_icon_rect(WindowType::Normal, window_rect, palette);
auto titlebar_inner_rect = titlebar_text_rect(WindowType::Normal, window_rect, palette);
auto titlebar_title_rect = titlebar_inner_rect;
titlebar_title_rect.set_width(title_font.width(window_title));
auto [title_color, border_color, border_color2, stripes_color, shadow_color] = compute_frame_colors(window_state, palette);
painter.draw_line(titlebar_rect.bottom_left().translated(0, 1), titlebar_rect.bottom_right().translated(0, 1), palette.button());
painter.draw_line(titlebar_rect.bottom_left().translated(0, 2), titlebar_rect.bottom_right().translated(0, 2), palette.button());
painter.fill_rect_with_gradient(titlebar_rect, border_color, border_color2);
auto title_alignment = palette.title_alignment();
int stripe_right = leftmost_button_rect.left() - 3;
if (stripes_color.alpha() > 0) {
switch (title_alignment) {
case Gfx::TextAlignment::CenterLeft: {
int stripe_left = titlebar_title_rect.right() + 5;
if (stripe_left && stripe_right && stripe_left < stripe_right) {
for (int i = 2; i <= titlebar_inner_rect.height() - 2; i += 2) {
painter.draw_line({ stripe_left, titlebar_inner_rect.y() + i }, { stripe_right, titlebar_inner_rect.y() + i }, stripes_color);
}
}
break;
}
case Gfx::TextAlignment::CenterRight: {
for (int i = 2; i <= titlebar_inner_rect.height() - 2; i += 2) {
painter.draw_line({ titlebar_inner_rect.left(), titlebar_inner_rect.y() + i }, { stripe_right - titlebar_title_rect.width() - 3, titlebar_inner_rect.y() + i }, stripes_color);
}
break;
}
case Gfx::TextAlignment::Center: {
auto stripe_width = (leftmost_button_rect.left() / 2 - titlebar_title_rect.width() / 2) - titlebar_icon_rect.width() - 3;
for (int i = 2; i <= titlebar_inner_rect.height() - 2; i += 2) {
painter.draw_line({ titlebar_inner_rect.left(), titlebar_inner_rect.y() + i }, { titlebar_inner_rect.left() + stripe_width, titlebar_inner_rect.y() + i }, stripes_color);
painter.draw_line({ stripe_right - stripe_width, titlebar_inner_rect.y() + i }, { stripe_right, titlebar_inner_rect.y() + i }, stripes_color);
}
break;
}
default:
dbgln("Unhandled title alignment!");
}
}
auto clipped_title_rect = titlebar_title_rect;
clipped_title_rect.set_width(stripe_right - clipped_title_rect.x());
if (!clipped_title_rect.is_empty()) {
painter.draw_text(clipped_title_rect.translated(1, 2), window_title, title_font, title_alignment, shadow_color, Gfx::TextElision::Right);
// FIXME: The translated(0, 1) wouldn't be necessary if we could center text based on its baseline.
painter.draw_text(clipped_title_rect.translated(0, 1), window_title, title_font, title_alignment, title_color, Gfx::TextElision::Right);
}
painter.draw_scaled_bitmap(titlebar_icon_rect, icon, icon.rect());
}
void ClassicWindowTheme::paint_tool_window_frame(Painter& painter, WindowState window_state, IntRect const& window_rect, StringView title_text, Palette const& palette, IntRect const& leftmost_button_rect) const
{
auto frame_rect = frame_rect_for_window(WindowType::ToolWindow, window_rect, palette, 0);
frame_rect.set_location({ 0, 0 });
Gfx::StylePainter::paint_window_frame(painter, frame_rect, palette);
auto& title_font = FontDatabase::window_title_font();
auto titlebar_rect = this->titlebar_rect(WindowType::ToolWindow, window_rect, palette);
auto titlebar_inner_rect = titlebar_text_rect(WindowType::ToolWindow, window_rect, palette);
auto titlebar_title_rect = titlebar_inner_rect;
titlebar_title_rect.set_width(title_font.width(title_text));
auto [title_color, border_color, border_color2, stripes_color, shadow_color] = compute_frame_colors(window_state, palette);
painter.draw_line(titlebar_rect.bottom_left().translated(0, 1), titlebar_rect.bottom_right().translated(0, 1), palette.button());
painter.draw_line(titlebar_rect.bottom_left().translated(0, 2), titlebar_rect.bottom_right().translated(0, 2), palette.button());
painter.fill_rect_with_gradient(titlebar_rect, border_color, border_color2);
int stripe_right = leftmost_button_rect.left() - 3;
auto clipped_title_rect = titlebar_title_rect;
clipped_title_rect.set_width(stripe_right - clipped_title_rect.x());
if (!clipped_title_rect.is_empty()) {
painter.draw_text(clipped_title_rect.translated(1, 2), title_text, title_font, Gfx::TextAlignment::CenterLeft, shadow_color, Gfx::TextElision::Right);
// FIXME: The translated(0, 1) wouldn't be necessary if we could center text based on its baseline.
painter.draw_text(clipped_title_rect.translated(0, 1), title_text, title_font, Gfx::TextAlignment::CenterLeft, title_color, Gfx::TextElision::Right);
}
}
IntRect ClassicWindowTheme::menubar_rect(WindowType window_type, IntRect const& window_rect, Palette const& palette, int menu_row_count) const
{
if (window_type != WindowType::Normal)
return {};
return { palette.window_border_thickness(), palette.window_border_thickness() - 1 + titlebar_height(window_type, palette) + 2, window_rect.width(), menubar_height * menu_row_count };
}
IntRect ClassicWindowTheme::titlebar_rect(WindowType window_type, IntRect const& window_rect, Palette const& palette) const
{
auto& title_font = FontDatabase::window_title_font();
auto window_titlebar_height = titlebar_height(window_type, palette);
// FIXME: The top of the titlebar doesn't get redrawn properly if this padding is different
int total_vertical_padding = title_font.glyph_height() - 1;
if (window_type == WindowType::Notification)
return { window_rect.width() + 3, total_vertical_padding / 2 - 1, window_titlebar_height, window_rect.height() };
return { palette.window_border_thickness(), palette.window_border_thickness(), window_rect.width(), window_titlebar_height };
}
ClassicWindowTheme::FrameColors ClassicWindowTheme::compute_frame_colors(WindowState state, Palette const& palette) const
{
switch (state) {
case WindowState::Highlighted:
return { palette.highlight_window_title(), palette.highlight_window_border1(), palette.highlight_window_border2(), palette.highlight_window_title_stripes(), palette.highlight_window_title_shadow() };
case WindowState::Moving:
return { palette.moving_window_title(), palette.moving_window_border1(), palette.moving_window_border2(), palette.moving_window_title_stripes(), palette.moving_window_title_shadow() };
case WindowState::Active:
return { palette.active_window_title(), palette.active_window_border1(), palette.active_window_border2(), palette.active_window_title_stripes(), palette.active_window_title_shadow() };
case WindowState::Inactive:
return { palette.inactive_window_title(), palette.inactive_window_border1(), palette.inactive_window_border2(), palette.inactive_window_title_stripes(), palette.inactive_window_title_shadow() };
default:
VERIFY_NOT_REACHED();
}
}
void ClassicWindowTheme::paint_notification_frame(Painter& painter, IntRect const& window_rect, Palette const& palette, IntRect const& close_button_rect) const
{
auto frame_rect = frame_rect_for_window(WindowType::Notification, window_rect, palette, 0);
frame_rect.set_location({ 0, 0 });
Gfx::StylePainter::paint_window_frame(painter, frame_rect, palette);
auto titlebar_rect = this->titlebar_rect(WindowType::Notification, window_rect, palette);
painter.fill_rect_with_gradient(Gfx::Orientation::Vertical, titlebar_rect, palette.active_window_border1(), palette.active_window_border2());
if (palette.active_window_title_stripes().alpha() > 0) {
int stripe_top = close_button_rect.bottom() + 4;
int stripe_bottom = window_rect.height() - 3;
if (stripe_top && stripe_bottom && stripe_top < stripe_bottom) {
for (int i = 2; i <= palette.window_title_height() - 2; i += 2) {
painter.draw_line({ titlebar_rect.x() + i, stripe_top }, { titlebar_rect.x() + i, stripe_bottom }, palette.active_window_title_stripes());
}
}
}
}
IntRect ClassicWindowTheme::frame_rect_for_window(WindowType window_type, IntRect const& window_rect, Gfx::Palette const& palette, int menu_row_count) const
{
auto window_titlebar_height = titlebar_height(window_type, palette);
auto border_thickness = palette.window_border_thickness();
switch (window_type) {
case WindowType::Normal:
case WindowType::ToolWindow:
return {
window_rect.x() - border_thickness,
window_rect.y() - window_titlebar_height - border_thickness - 1 - menu_row_count * menubar_height,
window_rect.width() + (border_thickness * 2),
window_rect.height() + (border_thickness * 2) + 1 + window_titlebar_height + menu_row_count * menubar_height
};
case WindowType::Notification:
return {
window_rect.x() - 3,
window_rect.y() - 3,
window_rect.width() + 6 + window_titlebar_height,
window_rect.height() + 6
};
default:
return window_rect;
}
}
Vector<IntRect> ClassicWindowTheme::layout_buttons(WindowType window_type, IntRect const& window_rect, Palette const& palette, size_t buttons) const
{
int window_button_width = palette.window_title_button_width();
int window_button_height = palette.window_title_button_height();
int pos;
Vector<IntRect> button_rects;
if (window_type == WindowType::Notification)
pos = titlebar_rect(window_type, window_rect, palette).top() + 2;
else
pos = titlebar_text_rect(window_type, window_rect, palette).right() + 1;
for (size_t i = 0; i < buttons; i++) {
if (window_type == WindowType::Notification) {
// The button height & width have to be equal or it leaks out of its area
Gfx::IntRect rect { 0, pos, window_button_height, window_button_height };
rect.center_horizontally_within(titlebar_rect(window_type, window_rect, palette));
button_rects.append(rect);
pos += window_button_height;
} else {
pos -= window_button_width;
Gfx::IntRect rect { pos, 0, window_button_width, window_button_height };
rect.center_vertically_within(titlebar_text_rect(window_type, window_rect, palette));
button_rects.append(rect);
}
}
return button_rects;
}
int ClassicWindowTheme::titlebar_height(WindowType window_type, Palette const& palette) const
{
auto& title_font = FontDatabase::window_title_font();
switch (window_type) {
case WindowType::Normal:
case WindowType::Notification:
return max(palette.window_title_height(), title_font.glyph_height() + 8);
case WindowType::ToolWindow:
return max(palette.window_title_height() - 4, title_font.glyph_height() + 4);
default:
return 0;
}
}
}