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ladybird/Userland/Services/WindowServer/WindowFrame.cpp
Andreas Kling 5d180d1f99 Everywhere: Rename ASSERT => VERIFY 
(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED)

Since all of these checks are done in release builds as well,
let's rename them to VERIFY to prevent confusion, as everyone is
used to assertions being compiled out in release.

We can introduce a new ASSERT macro that is specifically for debug
checks, but I'm doing this wholesale conversion first since we've
accumulated thousands of these already, and it's not immediately
obvious which ones are suitable for ASSERT.
2021-02-23 20:56:54 +01:00

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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "ClientConnection.h"
#include <AK/Badge.h>
#include <LibGfx/Font.h>
#include <LibGfx/Painter.h>
#include <LibGfx/StylePainter.h>
#include <LibGfx/WindowTheme.h>
#include <WindowServer/Button.h>
#include <WindowServer/Compositor.h>
#include <WindowServer/Event.h>
#include <WindowServer/Screen.h>
#include <WindowServer/Window.h>
#include <WindowServer/WindowFrame.h>
#include <WindowServer/WindowManager.h>
namespace WindowServer {
static Gfx::WindowTheme::WindowType to_theme_window_type(WindowType type)
{
switch (type) {
case WindowType::Normal:
return Gfx::WindowTheme::WindowType::Normal;
case WindowType::ToolWindow:
return Gfx::WindowTheme::WindowType::ToolWindow;
case WindowType::Notification:
return Gfx::WindowTheme::WindowType::Notification;
default:
return Gfx::WindowTheme::WindowType::Other;
}
}
static Gfx::Bitmap* s_minimize_icon;
static Gfx::Bitmap* s_maximize_icon;
static Gfx::Bitmap* s_restore_icon;
static Gfx::Bitmap* s_close_icon;
static String s_last_title_button_icons_path;
static int s_last_title_button_icons_scale;
static Gfx::Bitmap* s_active_window_shadow;
static Gfx::Bitmap* s_inactive_window_shadow;
static Gfx::Bitmap* s_menu_bar_shadow;
static Gfx::Bitmap* s_menu_shadow;
static Gfx::Bitmap* s_task_bar_shadow;
static Gfx::Bitmap* s_tooltip_shadow;
static String s_last_active_window_shadow_path;
static String s_last_inactive_window_shadow_path;
static String s_last_menu_bar_shadow_path;
static String s_last_menu_shadow_path;
static String s_last_task_bar_shadow_path;
static String s_last_tooltip_shadow_path;
static Gfx::IntRect frame_rect_for_window(Window& window, const Gfx::IntRect& rect)
{
if (window.is_frameless())
return rect;
return Gfx::WindowTheme::current().frame_rect_for_window(to_theme_window_type(window.type()), rect, WindowManager::the().palette());
}
WindowFrame::WindowFrame(Window& window)
: m_window(window)
{
auto button = make<Button>(*this, [this](auto&) {
m_window.request_close();
});
m_close_button = button.ptr();
m_buttons.append(move(button));
if (window.is_resizable()) {
auto button = make<Button>(*this, [this](auto&) {
WindowManager::the().maximize_windows(m_window, !m_window.is_maximized());
});
button->on_middle_click = [&](auto&) {
m_window.set_vertically_maximized();
};
m_maximize_button = button.ptr();
m_buttons.append(move(button));
}
if (window.is_minimizable()) {
auto button = make<Button>(*this, [this](auto&) {
WindowManager::the().minimize_windows(m_window, true);
});
m_minimize_button = button.ptr();
m_buttons.append(move(button));
}
set_button_icons();
}
WindowFrame::~WindowFrame()
{
}
void WindowFrame::set_button_icons()
{
m_dirty = true;
if (m_window.is_frameless())
return;
m_close_button->set_icon(*s_close_icon);
if (m_window.is_minimizable())
m_minimize_button->set_icon(*s_minimize_icon);
if (m_window.is_resizable())
m_maximize_button->set_icon(m_window.is_maximized() ? *s_restore_icon : *s_maximize_icon);
}
void WindowFrame::reload_config()
{
String icons_path = WindowManager::the().palette().title_button_icons_path();
int icons_scale = WindowManager::the().compositor_icon_scale();
StringBuilder full_path;
if (!s_minimize_icon || s_last_title_button_icons_path != icons_path || s_last_title_button_icons_scale != icons_scale) {
full_path.append(icons_path);
full_path.append("window-minimize.png");
if (s_minimize_icon)
s_minimize_icon->unref();
if (!(s_minimize_icon = Gfx::Bitmap::load_from_file(full_path.to_string(), icons_scale).leak_ref()))
s_minimize_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/downward-triangle.png", icons_scale).leak_ref();
full_path.clear();
}
if (!s_maximize_icon || s_last_title_button_icons_path != icons_path || s_last_title_button_icons_scale != icons_scale) {
full_path.append(icons_path);
full_path.append("window-maximize.png");
if (s_maximize_icon)
s_maximize_icon->unref();
if (!(s_maximize_icon = Gfx::Bitmap::load_from_file(full_path.to_string(), icons_scale).leak_ref()))
s_maximize_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/upward-triangle.png", icons_scale).leak_ref();
full_path.clear();
}
if (!s_restore_icon || s_last_title_button_icons_path != icons_path || s_last_title_button_icons_scale != icons_scale) {
full_path.append(icons_path);
full_path.append("window-restore.png");
if (s_restore_icon)
s_restore_icon->unref();
if (!(s_restore_icon = Gfx::Bitmap::load_from_file(full_path.to_string(), icons_scale).leak_ref()))
s_restore_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/window-restore.png", icons_scale).leak_ref();
full_path.clear();
}
if (!s_close_icon || s_last_title_button_icons_path != icons_path || s_last_title_button_icons_scale != icons_scale) {
full_path.append(icons_path);
full_path.append("window-close.png");
if (s_close_icon)
s_close_icon->unref();
if (!(s_close_icon = Gfx::Bitmap::load_from_file(full_path.to_string(), icons_scale).leak_ref()))
s_close_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/window-close.png", icons_scale).leak_ref();
full_path.clear();
}
s_last_title_button_icons_path = icons_path;
s_last_title_button_icons_scale = icons_scale;
auto load_shadow = [](const String& path, String& last_path, Gfx::Bitmap*& shadow_bitmap) {
if (path.is_empty()) {
last_path = String::empty();
if (shadow_bitmap) {
shadow_bitmap->unref();
shadow_bitmap = nullptr;
}
} else if (!shadow_bitmap || shadow_bitmap->scale() != s_last_title_button_icons_scale || last_path != path) {
if (shadow_bitmap)
shadow_bitmap->unref();
shadow_bitmap = Gfx::Bitmap::load_from_file(path, s_last_title_button_icons_scale).leak_ref();
if (shadow_bitmap)
last_path = path;
else
last_path = String::empty();
}
};
load_shadow(WindowManager::the().palette().active_window_shadow_path(), s_last_active_window_shadow_path, s_active_window_shadow);
load_shadow(WindowManager::the().palette().inactive_window_shadow_path(), s_last_inactive_window_shadow_path, s_inactive_window_shadow);
load_shadow(WindowManager::the().palette().menu_bar_shadow_path(), s_last_menu_bar_shadow_path, s_menu_bar_shadow);
load_shadow(WindowManager::the().palette().menu_shadow_path(), s_last_menu_shadow_path, s_menu_shadow);
load_shadow(WindowManager::the().palette().task_bar_shadow_path(), s_last_task_bar_shadow_path, s_task_bar_shadow);
load_shadow(WindowManager::the().palette().tooltip_shadow_path(), s_last_tooltip_shadow_path, s_tooltip_shadow);
}
Gfx::Bitmap* WindowFrame::window_shadow() const
{
if (m_window.is_frameless())
return nullptr;
switch (m_window.type()) {
case WindowType::Desktop:
return nullptr;
case WindowType::Menu:
return s_menu_shadow;
case WindowType::Tooltip:
return s_tooltip_shadow;
case WindowType::Menubar:
return s_menu_bar_shadow;
case WindowType::Taskbar:
return s_task_bar_shadow;
default:
return m_window.is_active() ? s_active_window_shadow : s_inactive_window_shadow;
}
}
bool WindowFrame::frame_has_alpha() const
{
if (m_has_alpha_channel)
return true;
if (auto* shadow_bitmap = window_shadow(); shadow_bitmap && shadow_bitmap->format() == Gfx::BitmapFormat::RGBA32)
return true;
return false;
}
void WindowFrame::did_set_maximized(Badge<Window>, bool maximized)
{
VERIFY(m_maximize_button);
m_maximize_button->set_icon(maximized ? *s_restore_icon : *s_maximize_icon);
}
Gfx::IntRect WindowFrame::title_bar_rect() const
{
return Gfx::WindowTheme::current().title_bar_rect(to_theme_window_type(m_window.type()), m_window.rect(), WindowManager::the().palette());
}
Gfx::IntRect WindowFrame::title_bar_icon_rect() const
{
return Gfx::WindowTheme::current().title_bar_icon_rect(to_theme_window_type(m_window.type()), m_window.rect(), WindowManager::the().palette());
}
Gfx::IntRect WindowFrame::title_bar_text_rect() const
{
return Gfx::WindowTheme::current().title_bar_text_rect(to_theme_window_type(m_window.type()), m_window.rect(), WindowManager::the().palette());
}
Gfx::WindowTheme::WindowState WindowFrame::window_state_for_theme() const
{
auto& wm = WindowManager::the();
if (m_flash_timer && m_flash_timer->is_active())
return m_flash_counter & 1 ? Gfx::WindowTheme::WindowState::Active : Gfx::WindowTheme::WindowState::Inactive;
if (&m_window == wm.m_highlight_window)
return Gfx::WindowTheme::WindowState::Highlighted;
if (&m_window == wm.m_move_window)
return Gfx::WindowTheme::WindowState::Moving;
if (wm.is_active_window_or_accessory(m_window))
return Gfx::WindowTheme::WindowState::Active;
return Gfx::WindowTheme::WindowState::Inactive;
}
void WindowFrame::paint_notification_frame(Gfx::Painter& painter)
{
auto palette = WindowManager::the().palette();
Gfx::WindowTheme::current().paint_notification_frame(painter, m_window.rect(), palette, m_buttons.last().relative_rect());
}
String WindowFrame::compute_title_text() const
{
if (m_window.client() && m_window.client()->is_unresponsive())
return String::formatted("{} (Not responding)", m_window.title());
return m_window.title();
}
void WindowFrame::paint_tool_window_frame(Gfx::Painter& painter)
{
auto palette = WindowManager::the().palette();
auto leftmost_button_rect = m_buttons.is_empty() ? Gfx::IntRect() : m_buttons.last().relative_rect();
Gfx::WindowTheme::current().paint_tool_window_frame(painter, window_state_for_theme(), m_window.rect(), compute_title_text(), palette, leftmost_button_rect);
}
void WindowFrame::paint_normal_frame(Gfx::Painter& painter)
{
auto palette = WindowManager::the().palette();
auto leftmost_button_rect = m_buttons.is_empty() ? Gfx::IntRect() : m_buttons.last().relative_rect();
Gfx::WindowTheme::current().paint_normal_frame(painter, window_state_for_theme(), m_window.rect(), compute_title_text(), m_window.icon(), palette, leftmost_button_rect);
}
void WindowFrame::paint(Gfx::Painter& painter, const Gfx::IntRect& rect)
{
render_to_cache();
auto frame_rect = render_rect();
auto window_rect = m_window.rect();
if (m_top_bottom) {
auto top_bottom_height = frame_rect.height() - window_rect.height();
if (m_bottom_y > 0) {
// We have a top piece
auto src_rect = rect.intersected({ frame_rect.location(), { frame_rect.width(), m_bottom_y } });
if (!src_rect.is_empty())
painter.blit(src_rect.location(), *m_top_bottom, src_rect.translated(-frame_rect.location()), m_opacity);
}
if (m_bottom_y < top_bottom_height) {
// We have a bottom piece
Gfx::IntRect rect_in_frame { frame_rect.x(), window_rect.bottom() + 1, frame_rect.width(), top_bottom_height - m_bottom_y };
auto src_rect = rect.intersected(rect_in_frame);
if (!src_rect.is_empty())
painter.blit(src_rect.location(), *m_top_bottom, src_rect.translated(-rect_in_frame.x(), -rect_in_frame.y() + m_bottom_y), m_opacity);
}
}
if (m_left_right) {
auto left_right_width = frame_rect.width() - window_rect.width();
if (m_right_x > 0) {
// We have a left piece
Gfx::IntRect rect_in_frame { frame_rect.x(), window_rect.y(), m_right_x, window_rect.height() };
auto src_rect = rect.intersected(rect_in_frame);
if (!src_rect.is_empty())
painter.blit(src_rect.location(), *m_left_right, src_rect.translated(-rect_in_frame.location()), m_opacity);
}
if (m_right_x < left_right_width) {
// We have a right piece
Gfx::IntRect rect_in_frame { window_rect.right() + 1, window_rect.y(), left_right_width - m_right_x, window_rect.height() };
auto src_rect = rect.intersected(rect_in_frame);
if (!src_rect.is_empty())
painter.blit(src_rect.location(), *m_left_right, src_rect.translated(-rect_in_frame.x() + m_right_x, -rect_in_frame.y()), m_opacity);
}
}
}
void WindowFrame::render(Gfx::Painter& painter)
{
if (m_window.is_frameless())
return;
if (m_window.type() == WindowType::Notification)
paint_notification_frame(painter);
else if (m_window.type() == WindowType::Normal)
paint_normal_frame(painter);
else if (m_window.type() == WindowType::ToolWindow)
paint_tool_window_frame(painter);
else
return;
for (auto& button : m_buttons) {
button.paint(painter);
}
}
void WindowFrame::theme_changed()
{
m_dirty = m_shadow_dirty = true;
m_top_bottom = nullptr;
m_left_right = nullptr;
m_bottom_y = m_right_x = 0;
layout_buttons();
set_button_icons();
m_has_alpha_channel = Gfx::WindowTheme::current().frame_uses_alpha(window_state_for_theme(), WindowManager::the().palette());
}
void WindowFrame::render_to_cache()
{
if (!m_dirty)
return;
m_dirty = false;
m_has_alpha_channel = Gfx::WindowTheme::current().frame_uses_alpha(window_state_for_theme(), WindowManager::the().palette());
static Gfx::Bitmap* s_tmp_bitmap;
auto frame_rect = rect();
auto total_frame_rect = frame_rect;
Gfx::Bitmap* shadow_bitmap = inflate_for_shadow(total_frame_rect, m_shadow_offset);
auto window_rect = m_window.rect();
auto scale = Screen::the().scale_factor();
if (!s_tmp_bitmap || !s_tmp_bitmap->size().contains(total_frame_rect.size()) || s_tmp_bitmap->scale() != scale) {
if (s_tmp_bitmap)
s_tmp_bitmap->unref();
s_tmp_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGBA32, total_frame_rect.size(), scale).leak_ref();
}
auto top_bottom_height = total_frame_rect.height() - window_rect.height();
auto left_right_width = total_frame_rect.width() - window_rect.width();
if (!m_top_bottom || m_top_bottom->width() != total_frame_rect.width() || m_top_bottom->height() != top_bottom_height || m_top_bottom->scale() != scale) {
if (top_bottom_height > 0)
m_top_bottom = Gfx::Bitmap::create(Gfx::BitmapFormat::RGBA32, { total_frame_rect.width(), top_bottom_height }, scale);
else
m_top_bottom = nullptr;
m_shadow_dirty = true;
}
if (!m_left_right || m_left_right->height() != total_frame_rect.height() || m_left_right->width() != left_right_width || m_left_right->scale() != scale) {
if (left_right_width > 0)
m_left_right = Gfx::Bitmap::create(Gfx::BitmapFormat::RGBA32, { left_right_width, total_frame_rect.height() }, scale);
else
m_left_right = nullptr;
m_shadow_dirty = true;
}
auto& frame_rect_to_update = m_shadow_dirty ? total_frame_rect : frame_rect;
Gfx::IntPoint update_location(m_shadow_dirty ? Gfx::IntPoint { 0, 0 } : m_shadow_offset);
Gfx::Painter painter(*s_tmp_bitmap);
// Clear the frame area, not including the window content area, which we don't care about
for (auto& rect : frame_rect_to_update.shatter(window_rect))
painter.clear_rect({ rect.location() - frame_rect_to_update.location(), rect.size() }, { 255, 255, 255, 0 });
if (m_shadow_dirty && shadow_bitmap)
paint_simple_rect_shadow(painter, { { 0, 0 }, total_frame_rect.size() }, *shadow_bitmap);
{
Gfx::PainterStateSaver save(painter);
painter.translate(m_shadow_offset);
render(painter);
}
if (m_top_bottom && top_bottom_height > 0) {
m_bottom_y = window_rect.y() - total_frame_rect.y();
VERIFY(m_bottom_y >= 0);
Gfx::Painter top_bottom_painter(*m_top_bottom);
top_bottom_painter.add_clip_rect({ update_location, { frame_rect_to_update.width(), top_bottom_height - update_location.y() - (total_frame_rect.bottom() - frame_rect_to_update.bottom()) } });
if (m_bottom_y > 0)
top_bottom_painter.blit({ 0, 0 }, *s_tmp_bitmap, { 0, 0, total_frame_rect.width(), m_bottom_y }, 1.0, false);
if (m_bottom_y < top_bottom_height)
top_bottom_painter.blit({ 0, m_bottom_y }, *s_tmp_bitmap, { 0, total_frame_rect.height() - (total_frame_rect.bottom() - window_rect.bottom()), total_frame_rect.width(), top_bottom_height - m_bottom_y }, 1.0, false);
} else {
m_bottom_y = 0;
}
if (left_right_width > 0) {
m_right_x = window_rect.x() - total_frame_rect.x();
VERIFY(m_right_x >= 0);
Gfx::Painter left_right_painter(*m_left_right);
left_right_painter.add_clip_rect({ update_location, { left_right_width - update_location.x() - (total_frame_rect.right() - frame_rect_to_update.right()), window_rect.height() } });
if (m_right_x > 0)
left_right_painter.blit({ 0, 0 }, *s_tmp_bitmap, { 0, m_bottom_y, m_right_x, window_rect.height() }, 1.0, false);
if (m_right_x < left_right_width)
left_right_painter.blit({ m_right_x, 0 }, *s_tmp_bitmap, { (window_rect.right() - total_frame_rect.x()) + 1, m_bottom_y, total_frame_rect.width() - (total_frame_rect.right() - window_rect.right()), window_rect.height() }, 1.0, false);
} else {
m_right_x = 0;
}
m_shadow_dirty = false;
}
void WindowFrame::set_opacity(float opacity)
{
if (m_opacity == opacity)
return;
bool was_opaque = is_opaque();
m_opacity = opacity;
if (was_opaque != is_opaque())
Compositor::the().invalidate_occlusions();
Compositor::the().invalidate_screen(render_rect());
WindowManager::the().notify_opacity_changed(m_window);
}
Gfx::IntRect WindowFrame::inflated_for_shadow(const Gfx::IntRect& frame_rect) const
{
if (auto* shadow = window_shadow()) {
auto total_shadow_size = shadow->height();
return frame_rect.inflated(total_shadow_size, total_shadow_size);
}
return frame_rect;
}
Gfx::Bitmap* WindowFrame::inflate_for_shadow(Gfx::IntRect& frame_rect, Gfx::IntPoint& shadow_offset) const
{
auto* shadow = window_shadow();
if (shadow) {
auto total_shadow_size = shadow->height();
frame_rect.inflate(total_shadow_size, total_shadow_size);
auto offset = total_shadow_size / 2;
shadow_offset = { offset, offset };
} else {
shadow_offset = {};
}
return shadow;
}
Gfx::IntRect WindowFrame::rect() const
{
return frame_rect_for_window(m_window, m_window.rect());
}
Gfx::IntRect WindowFrame::render_rect() const
{
return inflated_for_shadow(rect());
}
void WindowFrame::invalidate_title_bar()
{
m_dirty = true;
invalidate(title_bar_rect());
}
void WindowFrame::invalidate(Gfx::IntRect relative_rect)
{
auto frame_rect = rect();
auto window_rect = m_window.rect();
relative_rect.move_by(frame_rect.x() - window_rect.x(), frame_rect.y() - window_rect.y());
m_dirty = true;
m_window.invalidate(relative_rect, true);
}
void WindowFrame::notify_window_rect_changed(const Gfx::IntRect& old_rect, const Gfx::IntRect& new_rect)
{
layout_buttons();
auto old_frame_rect = inflated_for_shadow(frame_rect_for_window(m_window, old_rect));
auto new_frame_rect = inflated_for_shadow(frame_rect_for_window(m_window, new_rect));
if (old_frame_rect.size() != new_frame_rect.size())
m_dirty = m_shadow_dirty = true;
auto& compositor = Compositor::the();
for (auto& dirty : old_frame_rect.shatter(new_frame_rect))
compositor.invalidate_screen(dirty);
if (!m_window.is_opaque())
compositor.invalidate_screen(new_frame_rect);
compositor.invalidate_occlusions();
WindowManager::the().notify_rect_changed(m_window, old_rect, new_rect);
}
void WindowFrame::layout_buttons()
{
auto button_rects = Gfx::WindowTheme::current().layout_buttons(to_theme_window_type(m_window.type()), m_window.rect(), WindowManager::the().palette(), m_buttons.size());
for (size_t i = 0; i < m_buttons.size(); i++)
m_buttons[i].set_relative_rect(button_rects[i]);
}
bool WindowFrame::hit_test(const Gfx::IntPoint& point) const
{
if (m_window.is_frameless())
return false;
auto frame_rect = rect();
if (!frame_rect.contains(point))
return false;
auto window_rect = m_window.rect();
if (window_rect.contains(point))
return false;
u8 alpha_threshold = Gfx::WindowTheme::current().frame_alpha_hit_threshold(window_state_for_theme()) * 255;
if (alpha_threshold == 0)
return true;
u8 alpha = 0xff;
auto relative_point = point.translated(-render_rect().location());
if (point.y() < window_rect.y()) {
if (m_top_bottom)
alpha = m_top_bottom->get_pixel(relative_point * m_top_bottom->scale()).alpha();
} else if (point.y() > window_rect.bottom()) {
if (m_top_bottom)
alpha = m_top_bottom->get_pixel(relative_point.x() * m_top_bottom->scale(), m_bottom_y * m_top_bottom->scale() + point.y() - window_rect.bottom() - 1).alpha();
} else if (point.x() < window_rect.x()) {
if (m_left_right)
alpha = m_left_right->get_pixel(relative_point.x() * m_left_right->scale(), (relative_point.y() - m_bottom_y) * m_left_right->scale()).alpha();
} else if (point.x() > window_rect.right()) {
if (m_left_right)
alpha = m_left_right->get_pixel(m_right_x * m_left_right->scale() + point.x() - window_rect.right() - 1, (relative_point.y() - m_bottom_y) * m_left_right->scale()).alpha();
} else {
return false;
}
return alpha >= alpha_threshold;
}
void WindowFrame::on_mouse_event(const MouseEvent& event)
{
VERIFY(!m_window.is_fullscreen());
auto& wm = WindowManager::the();
if (m_window.type() != WindowType::Normal && m_window.type() != WindowType::ToolWindow && m_window.type() != WindowType::Notification)
return;
if (m_window.type() == WindowType::Normal || m_window.type() == WindowType::ToolWindow) {
if (event.type() == Event::MouseDown)
wm.move_to_front_and_make_active(m_window);
if (m_window.blocking_modal_window())
return;
if (title_bar_icon_rect().contains(event.position())) {
if (event.type() == Event::MouseDown && (event.button() == MouseButton::Left || event.button() == MouseButton::Right)) {
// Manually start a potential double click. Since we're opening
// a menu, we will only receive the MouseDown event, so we
// need to record that fact. If the user subsequently clicks
// on the same area, the menu will get closed, and we will
// receive a MouseUp event, but because windows have changed
// we don't get a MouseDoubleClick event. We can however record
// this click, and when we receive the MouseUp event check if
// it would have been considered a double click, if it weren't
// for the fact that we opened and closed a window in the meanwhile
auto& wm = WindowManager::the();
wm.start_menu_doubleclick(m_window, event);
m_window.popup_window_menu(title_bar_rect().bottom_left().translated(rect().location()), WindowMenuDefaultAction::Close);
return;
} else if (event.type() == Event::MouseUp && event.button() == MouseButton::Left) {
// Since the MouseDown event opened a menu, another MouseUp
// from the second click outside the menu wouldn't be considered
// a double click, so let's manually check if it would otherwise
// have been be considered to be one
auto& wm = WindowManager::the();
if (wm.is_menu_doubleclick(m_window, event)) {
// It is a double click, so perform activate the default item
m_window.window_menu_activate_default();
}
return;
}
}
}
// This is slightly hackish, but expand the title bar rect by two pixels downwards,
// so that mouse events between the title bar and window contents don't act like
// mouse events on the border.
auto adjusted_title_bar_rect = title_bar_rect();
adjusted_title_bar_rect.set_height(adjusted_title_bar_rect.height() + 2);
if (adjusted_title_bar_rect.contains(event.position())) {
wm.clear_resize_candidate();
if (event.type() == Event::MouseDown)
wm.move_to_front_and_make_active(m_window);
for (auto& button : m_buttons) {
if (button.relative_rect().contains(event.position()))
return button.on_mouse_event(event.translated(-button.relative_rect().location()));
}
if (event.type() == Event::MouseDown) {
if ((m_window.type() == WindowType::Normal || m_window.type() == WindowType::ToolWindow) && event.button() == MouseButton::Right) {
auto default_action = m_window.is_maximized() ? WindowMenuDefaultAction::Restore : WindowMenuDefaultAction::Maximize;
m_window.popup_window_menu(event.position().translated(rect().location()), default_action);
return;
}
if (m_window.is_movable() && event.button() == MouseButton::Left)
wm.start_window_move(m_window, event.translated(rect().location()));
}
return;
}
if (m_window.is_resizable() && event.type() == Event::MouseMove && event.buttons() == 0) {
constexpr ResizeDirection direction_for_hot_area[3][3] = {
{ ResizeDirection::UpLeft, ResizeDirection::Up, ResizeDirection::UpRight },
{ ResizeDirection::Left, ResizeDirection::None, ResizeDirection::Right },
{ ResizeDirection::DownLeft, ResizeDirection::Down, ResizeDirection::DownRight },
};
Gfx::IntRect outer_rect = { {}, rect().size() };
VERIFY(outer_rect.contains(event.position()));
int window_relative_x = event.x() - outer_rect.x();
int window_relative_y = event.y() - outer_rect.y();
int hot_area_row = min(2, window_relative_y / (outer_rect.height() / 3));
int hot_area_column = min(2, window_relative_x / (outer_rect.width() / 3));
wm.set_resize_candidate(m_window, direction_for_hot_area[hot_area_row][hot_area_column]);
Compositor::the().invalidate_cursor();
return;
}
if (m_window.is_resizable() && event.type() == Event::MouseDown && event.button() == MouseButton::Left)
wm.start_window_resize(m_window, event.translated(rect().location()));
}
void WindowFrame::start_flash_animation()
{
if (!m_flash_timer) {
m_flash_timer = Core::Timer::construct(100, [this] {
VERIFY(m_flash_counter);
invalidate_title_bar();
if (!--m_flash_counter)
m_flash_timer->stop();
});
}
m_flash_counter = 8;
m_flash_timer->start();
}
void WindowFrame::paint_simple_rect_shadow(Gfx::Painter& painter, const Gfx::IntRect& containing_rect, const Gfx::Bitmap& shadow_bitmap) const
{
// The layout of the shadow_bitmap is defined like this:
// +---------+----+---------+----+----+----+
// | TL | T | TR | LT | L | LB |
// +---------+----+---------+----+----+----+
// | BL | B | BR | RT | R | RB |
// +---------+----+---------+----+----+----+
// Located strictly on the top or bottom of the rectangle, above or below of the content:
// TL = top-left T = top TR = top-right
// BL = bottom-left B = bottom BR = bottom-right
// Located on the left or right of the rectangle, but not above or below of the content:
// LT = left-top L = left LB = left-bottom
// RT = right-top R = right RB = right-bottom
// So, the bitmap has two rows and 6 column, two of which are twice as wide.
// The height divided by two defines a cell size, and width of each
// column must be the same as the height of the cell, except for the
// first an third column, which are twice as wide.
if (shadow_bitmap.height() % 2 != 0) {
dbgln("Can't paint simple rect shadow, shadow bitmap height {} is not even", shadow_bitmap.height());
return;
}
auto base_size = shadow_bitmap.height() / 2;
if (shadow_bitmap.width() != base_size * (6 + 2)) {
if (shadow_bitmap.width() % base_size != 0)
dbgln("Can't paint simple rect shadow, shadow bitmap width {} is not a multiple of {}", shadow_bitmap.width(), base_size);
else
dbgln("Can't paint simple rect shadow, shadow bitmap width {} but expected {}", shadow_bitmap.width(), base_size * (6 + 2));
return;
}
// The containing_rect should have been inflated appropriately
VERIFY(containing_rect.size().contains(Gfx::IntSize { base_size, base_size }));
auto sides_height = containing_rect.height() - 2 * base_size;
auto half_height = sides_height / 2;
auto containing_horizontal_rect = containing_rect;
int horizontal_shift = 0;
if (half_height < base_size) {
// If the height is too small we need to shift the left/right accordingly
horizontal_shift = base_size - half_height;
containing_horizontal_rect.set_left(containing_horizontal_rect.left() + horizontal_shift);
containing_horizontal_rect.set_right(containing_horizontal_rect.right() - 2 * horizontal_shift);
}
auto half_width = containing_horizontal_rect.width() / 2;
auto paint_horizontal = [&](int y, int src_row) {
if (half_width <= 0)
return;
Gfx::PainterStateSaver save(painter);
painter.add_clip_rect({ containing_horizontal_rect.left(), y, containing_horizontal_rect.width(), base_size });
int corner_piece_width = min(containing_horizontal_rect.width() / 2, base_size * 2);
int left_corners_right = containing_horizontal_rect.left() + corner_piece_width;
int right_corners_left = max(containing_horizontal_rect.right() - corner_piece_width + 1, left_corners_right + 1);
painter.blit({ containing_horizontal_rect.left(), y }, shadow_bitmap, { 0, src_row * base_size, corner_piece_width, base_size });
painter.blit({ right_corners_left, y }, shadow_bitmap, { 5 * base_size - corner_piece_width, src_row * base_size, corner_piece_width, base_size });
if (containing_horizontal_rect.width() > 2 * corner_piece_width) {
for (int x = left_corners_right; x < right_corners_left; x += base_size) {
auto width = min(right_corners_left - x, base_size);
painter.blit({ x, y }, shadow_bitmap, { corner_piece_width, src_row * base_size, width, base_size });
}
}
};
paint_horizontal(containing_rect.top(), 0);
paint_horizontal(containing_rect.bottom() - base_size + 1, 1);
auto paint_vertical = [&](int x, int src_row, int hshift, int hsrcshift) {
Gfx::PainterStateSaver save(painter);
painter.add_clip_rect({ x, containing_rect.y() + base_size, base_size, containing_rect.height() - 2 * base_size });
int corner_piece_height = min(half_height, base_size);
int top_corners_bottom = base_size + corner_piece_height;
int bottom_corners_top = base_size + max(half_height, sides_height - corner_piece_height);
painter.blit({ x + hshift, containing_rect.top() + top_corners_bottom - corner_piece_height }, shadow_bitmap, { base_size * 5 + hsrcshift, src_row * base_size, base_size - hsrcshift, corner_piece_height });
painter.blit({ x + hshift, containing_rect.top() + bottom_corners_top }, shadow_bitmap, { base_size * 7 + hsrcshift, src_row * base_size + base_size - corner_piece_height, base_size - hsrcshift, corner_piece_height });
if (sides_height > 2 * base_size) {
for (int y = top_corners_bottom; y < bottom_corners_top; y += base_size) {
auto height = min(bottom_corners_top - y, base_size);
painter.blit({ x, containing_rect.top() + y }, shadow_bitmap, { base_size * 6, src_row * base_size, base_size, height });
}
}
};
paint_vertical(containing_rect.left(), 0, horizontal_shift, 0);
paint_vertical(containing_rect.right() - base_size + 1, 1, 0, horizontal_shift);
}
}
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