ladybird/LibGUI/GButton.cpp
Andreas Kling b4da451c9a WindowServer+LibGUI: Implement automatic cursor tracking.
When a mouse button is pressed inside a window, put that window into an
automatic mouse tracking state where all mouse events are sent to that
window until all mouse buttons are released.

This might feel even better if it only cared about the mouse buttons you
actually pressed while *inside* the windows to get released, I don't know.
I'll have to use it for a while and see how it's like.
2019-03-24 15:01:56 +01:00

103 lines
2.5 KiB
C++

#include "GButton.h"
#include <SharedGraphics/Painter.h>
#include <LibGUI/GStyle.h>
//#define GBUTTON_DEBUG
GButton::GButton(GWidget* parent)
: GWidget(parent)
{
}
GButton::~GButton()
{
}
void GButton::set_caption(const String& caption)
{
if (caption == m_caption)
return;
m_caption = caption;
update();
}
void GButton::paint_event(GPaintEvent& event)
{
Painter painter(*this);
painter.set_clip_rect(event.rect());
GStyle::the().paint_button(painter, rect(), m_button_style, m_being_pressed, m_hovered);
if (!caption().is_empty() || m_icon) {
auto content_rect = rect();
auto icon_location = m_icon ? content_rect.center().translated(-(m_icon->width() / 2), -(m_icon->height() / 2)) : Point();
if (m_being_pressed) {
content_rect.move_by(1, 1);
icon_location.move_by(1, 1);
}
if (m_icon) {
painter.blit(icon_location, *m_icon, m_icon->rect());
painter.draw_text(content_rect, caption(), TextAlignment::Center, Color::Black);
} else {
painter.draw_text(content_rect, caption(), TextAlignment::Center, Color::Black);
}
}
}
void GButton::mousemove_event(GMouseEvent& event)
{
if (event.buttons() == GMouseButton::Left) {
bool being_pressed = rect().contains(event.position());
if (being_pressed != m_being_pressed) {
m_being_pressed = being_pressed;
update();
}
}
GWidget::mousemove_event(event);
}
void GButton::mousedown_event(GMouseEvent& event)
{
#ifdef GBUTTON_DEBUG
dbgprintf("GButton::mouse_down_event: x=%d, y=%d, button=%u\n", event.x(), event.y(), (unsigned)event.button());
#endif
if (event.button() == GMouseButton::Left) {
m_being_pressed = true;
update();
}
GWidget::mousedown_event(event);
}
void GButton::click()
{
if (on_click)
on_click(*this);
}
void GButton::mouseup_event(GMouseEvent& event)
{
#ifdef GBUTTON_DEBUG
dbgprintf("GButton::mouse_up_event: x=%d, y=%d, button=%u\n", event.x(), event.y(), (unsigned)event.button());
#endif
if (event.button() == GMouseButton::Left) {
bool was_being_pressed = m_being_pressed;
m_being_pressed = false;
update();
if (was_being_pressed)
click();
}
GWidget::mouseup_event(event);
}
void GButton::enter_event(GEvent&)
{
m_hovered = true;
update();
}
void GButton::leave_event(GEvent&)
{
m_hovered = false;
update();
}