2009-11-24 07:34:58 +08:00
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/*
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* File : button.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2009-10-16 Bernard first version
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*/
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#include <rtgui/dc.h>
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#include <rtgui/widgets/button.h>
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#include <rtgui/rtgui_theme.h>
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static void _rtgui_button_constructor(rtgui_button_t *button)
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{
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/* init widget and set event handler */
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RTGUI_WIDGET(button)->flag |= RTGUI_WIDGET_FLAG_FOCUSABLE;
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rtgui_widget_set_event_handler(RTGUI_WIDGET(button), rtgui_button_event_handler);
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/* un-press button */
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button->flag &= ~RTGUI_BUTTON_FLAG_PRESS;
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/* set flag and on_button event handler */
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button->pressed_image = RT_NULL;
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button->unpressed_image = RT_NULL;
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button->on_button = RT_NULL;
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/* set gc */
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RTGUI_WIDGET_FOREGROUND(RTGUI_WIDGET(button)) = default_foreground;
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RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(button)) = RTGUI_RGB(212, 208, 200);
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RTGUI_WIDGET_TEXTALIGN(RTGUI_WIDGET(button)) = RTGUI_ALIGN_CENTER_HORIZONTAL | RTGUI_ALIGN_CENTER_VERTICAL;
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}
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static void _rtgui_button_destructor(rtgui_button_t *button)
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{
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if (button->pressed_image != RT_NULL)
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{
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rtgui_image_destroy(button->pressed_image);
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button->pressed_image = RT_NULL;
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}
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if (button->unpressed_image != RT_NULL)
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{
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rtgui_image_destroy(button->unpressed_image);
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button->unpressed_image = RT_NULL;
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}
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}
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rtgui_type_t *rtgui_button_type_get(void)
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{
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static rtgui_type_t *button_type = RT_NULL;
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if (!button_type)
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{
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button_type = rtgui_type_create("button", RTGUI_LABEL_TYPE,
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sizeof(rtgui_button_t),
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RTGUI_CONSTRUCTOR(_rtgui_button_constructor),
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RTGUI_DESTRUCTOR(_rtgui_button_destructor));
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}
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return button_type;
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}
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rt_bool_t rtgui_button_event_handler(struct rtgui_widget* widget, struct rtgui_event* event)
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{
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struct rtgui_button* btn;
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RT_ASSERT(widget != RT_NULL);
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btn = (struct rtgui_button*) widget;
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switch (event->type)
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{
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case RTGUI_EVENT_PAINT:
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if (widget->on_draw != RT_NULL ) widget->on_draw(widget, event);
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else rtgui_theme_draw_button(btn);
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break;
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case RTGUI_EVENT_MOUSE_BUTTON:
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{
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struct rtgui_event_mouse* emouse = (struct rtgui_event_mouse*)event;
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if (btn->flag & RTGUI_BUTTON_TYPE_PUSH)
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{
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/* it's a push button */
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if (emouse->button & RTGUI_MOUSE_BUTTON_UP)
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{
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if (btn->flag & RTGUI_BUTTON_FLAG_PRESS)
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btn->flag &= ~RTGUI_BUTTON_FLAG_PRESS;
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else
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btn->flag |= RTGUI_BUTTON_FLAG_PRESS;
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/* draw button */
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if (widget->on_draw != RT_NULL ) widget->on_draw(widget, event);
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else rtgui_theme_draw_button(btn);
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/* invokes call back */
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if (widget->on_mouseclick != RT_NULL &&
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emouse->button & RTGUI_MOUSE_BUTTON_UP)
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return widget->on_mouseclick(widget, event);
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}
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}
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else
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{
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if (emouse->button & RTGUI_MOUSE_BUTTON_LEFT)
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{
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/* it's a normal button */
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if (emouse->button & RTGUI_MOUSE_BUTTON_DOWN)
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{
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btn->flag |= RTGUI_BUTTON_FLAG_PRESS;
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}
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else
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{
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btn->flag &= ~RTGUI_BUTTON_FLAG_PRESS;
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}
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/* draw button */
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if (widget->on_draw != RT_NULL ) widget->on_draw(widget, event);
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else rtgui_theme_draw_button(btn);
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/* invokes call back */
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if (widget->on_mouseclick != RT_NULL &&
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emouse->button & RTGUI_MOUSE_BUTTON_UP)
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return widget->on_mouseclick(widget, event);
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}
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}
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return RT_TRUE;
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}
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}
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return RT_FALSE;
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}
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rtgui_button_t* rtgui_button_create(unsigned char* text)
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{
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struct rtgui_button* btn;
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btn = (struct rtgui_button*) rtgui_widget_create (RTGUI_BUTTON_TYPE);
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if (btn != RT_NULL)
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{
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rtgui_rect_t rect;
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/* set default rect */
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rtgui_font_get_metrics(rtgui_font_default(), text, &rect);
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rect.x2 += (RTGUI_BORDER_DEFAULT_WIDTH << 1);
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rect.y2 += (RTGUI_BORDER_DEFAULT_WIDTH << 1);
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rtgui_widget_set_rect(RTGUI_WIDGET(btn), &rect);
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rtgui_label_set_text(RTGUI_LABEL(btn), text);
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}
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return btn;
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}
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rtgui_button_t* rtgui_pushbutton_create(unsigned char* text)
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{
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rtgui_button_t* btn;
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btn = rtgui_button_create(text);
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if (btn != RT_NULL) btn->flag |= RTGUI_BUTTON_TYPE_PUSH;
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return btn;
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}
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void rtgui_button_destroy(rtgui_button_t* btn)
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{
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rtgui_widget_destroy(RTGUI_WIDGET(btn));
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}
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void rtgui_button_set_pressed_image(rtgui_button_t* btn, rtgui_image_t* image)
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{
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RT_ASSERT(btn != RT_NULL);
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btn->pressed_image = image;
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}
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void rtgui_button_set_unpressed_image(rtgui_button_t* btn, rtgui_image_t* image)
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{
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RT_ASSERT(btn != RT_NULL);
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btn->unpressed_image = image;
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}
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