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/*
* 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::default_font().bold_variant();
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::default_font().bold_variant();
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::default_font().bold_variant();
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::default_font().bold_variant();
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;
}
}
}
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