121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
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/*
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* 程序清单：edit控件演示
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*
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* 这个例子会在conatiner上进行edit控件的演示
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*/
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#include "demo_view.h"
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#include <rtgui/dc.h>
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#include <rtgui/rtgui_system.h>
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#include <rtgui/widgets/edit.h>
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#include <rtgui/widgets/button.h>
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void demo_edit_readin_file(struct rtgui_object *object, struct rtgui_event *event)
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{
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rtgui_button_t *button;
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struct rtgui_edit *edit;
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const char *filename = "/test_readin.txt";
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int fd;
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RT_ASSERT(object != RT_NULL);
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button = RTGUI_BUTTON(object);
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/* 取得edit指针 */
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edit = RTGUI_EDIT(RTGUI_WIDGET(button)->user_data);
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/* 判断文件是否存在 */
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fd = open(filename, O_RDONLY, 0);
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if (fd < 0)
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{
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/* 不存在存在,则创建它 */
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rt_kprintf("file:\"%s\" does not exist!\n", filename);
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return;
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}
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close(fd);
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rt_kprintf("read-in file:\"%s\"\n", filename);
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rtgui_edit_readin_file(edit, filename);
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}
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void demo_edit_saveas_file(struct rtgui_object *object, struct rtgui_event *event)
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{
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rtgui_button_t *button;
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struct rtgui_edit *edit;
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const char* filename = "/test_saveas.txt";
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int fd;
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RT_ASSERT(object != RT_NULL);
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button = RTGUI_BUTTON(object);
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/* 取得edit指针 */
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edit = RTGUI_EDIT(RTGUI_WIDGET(button)->user_data);
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/* 判断文件是否存在, 如果存在则删除之 */
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fd = open(filename, O_RDONLY, 0);
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if (fd > 0)
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{
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close(fd);
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/* 如果是在win32中调试, 请手工删除该文件吧, NT中文件是只读的,unlink删除不掉 */
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if (unlink(filename) == -1)
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rt_kprintf("Could not delete %s\n", filename);
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}
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rt_kprintf("save as file:\"%s\"\n", filename);
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rtgui_edit_saveas_file(edit, filename);
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}
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/* 创建用于演示edit控件的视图 */
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rtgui_container_t *demo_view_edit(void)
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{
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rtgui_rect_t rect;
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rtgui_container_t *container;
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struct rtgui_edit *edit;
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struct rtgui_button *button;
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/* 先创建一个演示用的视图 */
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container = demo_view("Edit View");
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edit = rtgui_edit_create(container, 10, 35, 220, 200);
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rtgui_edit_set_text(edit,
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"Edit beta v0.1\n"
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"Hello RT-Thread\n"
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"this's edit demo\n"
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"rtgui_edit_create\n"
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"rtgui_edit_append_line\n"
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"rtgui_edit_insert_line\n"
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"rtgui_edit_delete_line\n"
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"rtgui_edit_connect_line\n"
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"a\n"
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"b\n"
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"c\n"
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"d\n"
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"1234567890\n");
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/* 创建一个按钮, 读取某个文件 */
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demo_view_get_rect(container, &rect);
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rect.x1 += 10;
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rect.x2 = rect.x1 + 100;
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rect.y1 += 200;
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rect.y2 = rect.y1 + 22;
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button = rtgui_button_create("ReadIn File");
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rtgui_widget_set_rect(RTGUI_WIDGET(button), &rect);
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rtgui_container_add_child(container, RTGUI_WIDGET(button));
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rtgui_button_set_onbutton(button, demo_edit_readin_file);
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/* 使用user_data传递edit指针 */
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RTGUI_WIDGET(button)->user_data = (rt_uint32_t)edit;
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/* 创建一个按钮, 保存为某个文件 */
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demo_view_get_rect(container, &rect);
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rect.x1 += 130;
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rect.x2 = rect.x1 + 100;
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rect.y1 += 200;
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rect.y2 = rect.y1 + 22;
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button = rtgui_button_create("SaveAs File");
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rtgui_widget_set_rect(RTGUI_WIDGET(button), &rect);
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rtgui_container_add_child(container, RTGUI_WIDGET(button));
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rtgui_button_set_onbutton(button, demo_edit_saveas_file);
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/* 使用user_data传递edit指针 */
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RTGUI_WIDGET(button)->user_data = (rt_uint32_t)edit;
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return container;
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}
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