/* * File : button.c * This file is part of RT-Thread RTOS * COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team * * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://www.rt-thread.org/license/LICENSE * * Change Logs: * Date Author Notes * 2009-10-16 Bernard first version */ #include #include #include #include static rt_bool_t rtgui_button_onunfocus(PVOID wdt, rtgui_event_t* event); static void _rtgui_button_constructor(rtgui_button_t *button) { /* init widget and set event handler */ RTGUI_WIDGET_FLAG(button) |= RTGUI_WIDGET_FLAG_FOCUSABLE; rtgui_widget_set_event_handler(button, rtgui_button_event_handler); rtgui_widget_set_onunfocus(button, rtgui_button_onunfocus); /* un-press button */ button->flag = 0; rtgui_widget_set_style(button,RTGUI_BORDER_UP); /* set flag and on_button event handler */ button->image = RT_NULL; button->on_button = RT_NULL; /* set gc */ RTGUI_WIDGET_FOREGROUND(button) = default_foreground; RTGUI_WIDGET_BACKGROUND(button) = default_background; RTGUI_WIDGET_TEXTALIGN(button) = RTGUI_ALIGN_CENTER_HORIZONTAL|RTGUI_ALIGN_CENTER_VERTICAL; } static void _rtgui_button_destructor(rtgui_button_t *button) { if(button->image != RT_NULL) { rtgui_image_destroy(button->image); button->image = RT_NULL; } } rtgui_type_t *rtgui_button_type_get(void) { static rtgui_type_t *button_type = RT_NULL; if(!button_type) { button_type = rtgui_type_create("button", RTGUI_LABEL_TYPE, sizeof(rtgui_button_t), RTGUI_CONSTRUCTOR(_rtgui_button_constructor), RTGUI_DESTRUCTOR(_rtgui_button_destructor)); } return button_type; } rtgui_button_t* rtgui_button_create(PVOID parent, char* text,int left, int top, int w, int h) { rtgui_button_t* btn; RT_ASSERT(parent != RT_NULL); btn = rtgui_widget_create(RTGUI_BUTTON_TYPE); if(btn != RT_NULL) { rtgui_rect_t rect; /* set default rect */ rtgui_font_get_string_rect(RTGUI_WIDGET_FONT(btn), text, &rect); rtgui_label_set_text(RTGUI_LABEL(btn), text); rtgui_widget_get_rect(parent, &rect); rtgui_widget_rect_to_device(parent,&rect); rect.x1 += left; rect.y1 += top; rect.x2 = rect.x1+w; rect.y2 = rect.y1+h; rtgui_widget_set_rect(btn, &rect); rtgui_container_add_child(parent, btn); } return btn; } void rtgui_button_destroy(rtgui_button_t* btn) { rtgui_widget_destroy(btn); } rt_bool_t rtgui_button_event_handler(PVOID wdt, rtgui_event_t* event) { rtgui_widget_t *widget = (rtgui_widget_t*)wdt; rtgui_button_t* btn = (rtgui_button_t*) widget; if(btn == RT_NULL)return RT_FALSE; switch (event->type) { case RTGUI_EVENT_PAINT: if(widget->on_draw != RT_NULL ) widget->on_draw(widget, event); else rtgui_theme_draw_button(btn); break; case RTGUI_EVENT_KBD: { rtgui_event_kbd_t* ekbd = (rtgui_event_kbd_t*) event; if((ekbd->key == RTGUIK_RETURN) || (ekbd->key == RTGUIK_SPACE)) { if(RTGUI_KBD_IS_DOWN(ekbd)) { btn->flag |= RTGUI_BUTTON_FLAG_PRESS; } else { btn->flag &= ~RTGUI_BUTTON_FLAG_PRESS; } /* draw button */ rtgui_theme_draw_button(btn); if((btn->flag & RTGUI_BUTTON_FLAG_PRESS) && (btn->on_button != RT_NULL)) { /* call on button handler */ btn->on_button(widget, event); } } } break; case RTGUI_EVENT_MOUSE_BUTTON: { rtgui_event_mouse_t* emouse = (rtgui_event_mouse_t*)event; if(emouse->button & RTGUI_MOUSE_BUTTON_LEFT) { rtgui_widget_focus(widget); /* it's a normal button */ if(emouse->button & RTGUI_MOUSE_BUTTON_DOWN) { btn->flag |= RTGUI_BUTTON_FLAG_PRESS; } else { btn->flag &= ~RTGUI_BUTTON_FLAG_PRESS; } /* draw button */ if(widget->on_draw != RT_NULL ) widget->on_draw(widget, event); else { rtgui_theme_draw_button(btn); } /* invokes call back */ if(widget->on_mouseclick != RT_NULL && emouse->button & RTGUI_MOUSE_BUTTON_UP) return widget->on_mouseclick(widget, event); if(!(btn->flag & RTGUI_BUTTON_FLAG_PRESS) && (btn->on_button != RT_NULL)) { /* call on button handler */ btn->on_button(widget, event); } } return RT_TRUE; } default: break; } return RT_FALSE; } void rtgui_button_set_image(rtgui_button_t* btn, rtgui_image_t* image) { if(btn == RT_NULL)return; btn->image = image; } void rtgui_button_set_onbutton(rtgui_button_t* btn, rtgui_onbutton_func_t func) { RT_ASSERT(btn != RT_NULL); btn->on_button = func; } static rt_bool_t rtgui_button_onunfocus(PVOID wdt, rtgui_event_t* event) { rtgui_rect_t rect; rtgui_button_t *btn = (rtgui_button_t*)wdt; rtgui_dc_t *dc; RT_ASSERT(wdt != RT_NULL); dc = rtgui_dc_begin_drawing(wdt); if(dc == RT_NULL)return RT_FALSE; rtgui_widget_get_rect(btn, &rect); if(!RTGUI_WIDGET_IS_FOCUSED(btn)) {//Çå³ý½¹µã¿ò rtgui_color_t color; rtgui_rect_inflate(&rect, -2); color = RTGUI_DC_FC(dc); RTGUI_DC_FC(dc) = RTGUI_DC_BC(dc); rtgui_dc_draw_focus_rect(dc,&rect); RTGUI_DC_FC(dc) = color; } rtgui_dc_end_drawing(dc); return RT_TRUE; } void rtgui_button_set_text(rtgui_button_t* btn, const char* text) { if(btn == RT_NULL)return; rtgui_label_set_text(RTGUI_LABEL(btn), text); /* update widget */ rtgui_theme_draw_button(btn); }