button.cpp

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#include <gui/widgets/button.h>
#include <gui/font/amiga_font.h>
 
using namespace MaxOS::common;
using namespace MaxOS::gui;
using namespace MaxOS::gui::widgets;
using namespace MaxOS::drivers;
using namespace MaxOS::drivers::peripherals;
 
ButtonEventHandler::ButtonEventHandler() = default;
 
ButtonEventHandler::~ButtonEventHandler() = default;
 
Event<ButtonEvents>* ButtonEventHandler::on_event(Event<ButtonEvents>* event) {
 
    switch (event->type) {
 
        case ButtonEvents::PRESSED:
            on_button_pressed(((ButtonPressedEvent*) event)->source);
            break;
 
        case ButtonEvents::RELEASED:
            on_button_released(((ButtonReleasedEvent*) event)->source);
            break;
 
    }
    return event;
}
 
void ButtonEventHandler::on_button_pressed(Button*) {
 
}
 
void ButtonEventHandler::on_button_released(Button*) {
 
}
 
Button::Button(int32_t left, int32_t top, uint32_t width, uint32_t height, const string& text)
: Widget(left, top, width, height),
  background_colour(Colour(0xFF, 0xFF, 0xFF)),
  foreground_colour(Colour(0x00, 0x00, 0x00)),
  border_colour(Colour(0x57, 0x57, 0x57)),
  font((uint8_t*) AMIGA_FONT),
  text(text)
{
 
}
 
Button::~Button() = default;
 
void Button::draw(GraphicsContext* gc, Rectangle<int32_t>& area) {
 
    // Default Draw Operation
    Widget::draw(gc, area);
 
    // Get the absolute m_position of the button
    Coordinates button_coordinates = absolute_coordinates(Coordinates(0, 0));
    Rectangle<int32_t> button_position = position();
 
    // Get the x and y m_position of the button
    int32_t x = button_coordinates.first;
    int32_t y = button_coordinates.second;
 
    // Draw the background for the button
    gc->fill_rectangle(x + area.left, y + area.top, x + area.left + area.width,
                       y + area.top + area.height, background_colour);
 
    // Draw the border
 
    // Top Border
    if (area.intersects(Rectangle<int32_t>(0, 0, button_position.width, 1))) {
 
        // Start in the top left corner of the button and end in the top right corner
        gc->draw_line(x + area.left, y, x + area.left + area.width - 1, y,
                      border_colour);
    }
 
    // Left Border
    if (area.intersects(Rectangle<int32_t>(0, 0, 1, button_position.height))) {
 
        // Start in the top left corner and end in the bottom left corner
        gc->draw_line(x, y + area.top, x, y + area.top + area.height - 1,
                      border_colour);
    }
 
    // Right Border
    if (area.intersects(Rectangle<int32_t>(0, button_position.height - 1, button_position.width, 1))) {
 
        // Start in the top right corner and end in the bottom right corner
        gc->draw_line(x + area.left, y + button_position.height - 1,
                      x + area.left + area.width - 1,
                      y + button_position.height - 1, border_colour);
    }
 
    // Bottom Border
    if (area.intersects(Rectangle<int32_t>(button_position.width - 1, 0, 1, button_position.height))) {
 
        // Start in the bottom left corner and end in the bottom right corner
        gc->draw_line(x + button_position.width - 1, y + area.top,
                      x + button_position.width - 1,
                      y + area.top + area.height - 1, border_colour);
    }
 
    // Draw the text
    common::Rectangle<int32_t> text_area(area.left - 1, area.top - 1, area.width, area.height);
    font.draw_text(x + 1, y + 1, foreground_colour, background_colour, gc, text,
                   text_area);
 
}
 
MouseEventHandler* Button::on_mouse_button_pressed(uint32_t x, uint32_t y, uint8_t button) {
 
    // Raise the event
    raise_event(new ButtonPressedEvent(this));
 
    // Change the button colour
    background_colour = Colour(0x57, 0x57, 0x57);
    Widget::invalidate();
 
    // Pass the event on (that it was handled)
    return Widget::on_mouse_button_pressed(x, y, button);
}
 
void Button::on_mouse_button_released(uint32_t x, uint32_t y, uint8_t button) {
 
    // Raise the button released event
    raise_event(new ButtonReleasedEvent(this));
 
    // Change the button colour
    background_colour = Colour(0xFF, 0xFF, 0xFF);
    Widget::invalidate();
 
    // Pass the event on (that it was handled)
    Widget::on_mouse_button_released(x, y, button);
}
 
ButtonReleasedEvent::ButtonReleasedEvent(Button* source)
: Event(ButtonEvents::RELEASED),
  source(source)
{
 
}
 
ButtonReleasedEvent::~ButtonReleasedEvent() = default;
 
ButtonPressedEvent::ButtonPressedEvent(Button* source)
: Event(ButtonEvents::PRESSED),
  source(source)
{
}
 
ButtonPressedEvent::~ButtonPressedEvent() = default;