rt-thread/bsp/mini2440/picture.c

301 lines
6.9 KiB
C
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#include <rtgui/rtgui.h>
#include <rtgui/image.h>
#include <rtgui/rtgui_system.h>
#include <rtgui/widgets/view.h>
#include <rtgui/widgets/workbench.h>
#include <dfs_posix.h>
#include <string.h>
enum picture_view_mode
{
VIEW_SINGLE_MODE,
VIEW_DIR_MODE,
VIEW_FN_LIST_MODE
};
static rtgui_view_t* picture_view = RT_NULL;
static enum picture_view_mode view_mode = VIEW_SINGLE_MODE;
/* current picture file name */
static char current_fn[32] = {0};
static const char** picture_fn_list;
static rt_uint8_t picture_fn_list_size, picture_fn_list_current;
static void picture_show_prev()
{
DIR* dir;
struct dirent* entry;
rt_bool_t is_last;
char fn[32];
fn[0] = '\0';
is_last = RT_FALSE;
dir = opendir("/");
if (dir == RT_NULL)
{
rt_kprintf("open directory failed\n");
return;
}
do
{
entry = readdir(dir);
if (entry != RT_NULL)
{
if (strstr(entry->d_name, ".hdc") != RT_NULL ||
strstr(entry->d_name, ".HDC") != RT_NULL)
{
/* it's a HDC image */
if ((strcmp(entry->d_name, current_fn) == 0) &&
is_last != RT_TRUE)
{
if (fn[0] == '\0')
{
/* it should be the last image */
is_last = RT_TRUE;
}
else
{
/* display image */
strcpy(current_fn, fn);
rtgui_widget_update(RTGUI_WIDGET(picture_view));
closedir(dir);
return;
}
}
strcpy(fn, entry->d_name);
}
}
} while(entry != RT_NULL);
/* close directory */
closedir(dir);
if ((is_last == RT_TRUE) && fn[0] != '\0')
{
strcpy(current_fn, fn);
rtgui_widget_update(RTGUI_WIDGET(picture_view));
}
}
static void picture_show_next()
{
DIR* dir;
struct dirent* entry;
rt_bool_t found, has_image;
found = RT_FALSE; has_image = RT_FALSE;
__restart:
dir = opendir("/");
if (dir == RT_NULL)
{
rt_kprintf("open directory failed\n");
return;
}
do
{
entry = readdir(dir);
if (entry != RT_NULL)
{
if (strstr(entry->d_name, ".hdc") != RT_NULL ||
strstr(entry->d_name, ".HDC") != RT_NULL)
{
/* this directory includes image */
has_image = RT_TRUE;
if (found == RT_TRUE || current_fn[0] == '\0')
{
strcpy(current_fn, entry->d_name);
rtgui_widget_update(RTGUI_WIDGET(picture_view));
closedir(dir);
return;
}
/* it's a HDC image */
if (strcmp(entry->d_name, current_fn) == 0)
found = RT_TRUE;
}
}
} while(entry != RT_NULL);
/* close directory */
closedir(dir);
if (has_image != RT_TRUE) return;
current_fn[0] = '\0';
goto __restart;
}
static rt_bool_t picture_view_event_handler(struct rtgui_widget* widget, struct rtgui_event* event)
{
if (event->type == RTGUI_EVENT_PAINT)
{
struct rtgui_dc* dc;
struct rtgui_rect rect;
struct rtgui_image* image;
char fn[32];
dc = rtgui_dc_begin_drawing(widget);
if (dc == RT_NULL) return RT_FALSE;
rtgui_widget_get_rect(widget, &rect);
/* open image */
rt_sprintf(fn, "/%s", current_fn);
image = rtgui_image_create_from_file("hdc",
fn, RT_FALSE);
if (image != RT_NULL)
{
/* blit image */
rtgui_image_blit(image, dc, &rect);
/* destroy image */
rtgui_image_destroy(image);
}
else
{
rtgui_dc_fill_rect(dc, &rect);
rtgui_dc_draw_text(dc, "û<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>", &rect);
}
rtgui_dc_end_drawing(dc);
return RT_FALSE;
}
else if (event->type == RTGUI_EVENT_KBD)
{
struct rtgui_event_kbd* ekbd = (struct rtgui_event_kbd*)event;
if (ekbd->type == RTGUI_KEYDOWN)
{
switch (ekbd->key)
{
case RTGUIK_UP:
if (view_mode == VIEW_DIR_MODE) picture_show_next();
else if (view_mode == VIEW_FN_LIST_MODE)
{
picture_fn_list_current ++;
if (picture_fn_list_current == picture_fn_list_size)
{
picture_fn_list_current = 0;
}
strcpy(current_fn, picture_fn_list[picture_fn_list_current]);
rtgui_widget_update(RTGUI_WIDGET(picture_view));
}
break;
case RTGUIK_DOWN:
if (view_mode == VIEW_DIR_MODE) picture_show_prev();
else if (view_mode == VIEW_FN_LIST_MODE)
{
if (picture_fn_list_current == 0)
{
picture_fn_list_current = picture_fn_list_size - 1;
}
else picture_fn_list_current --;
strcpy(current_fn, picture_fn_list[picture_fn_list_current]);
rtgui_widget_update(RTGUI_WIDGET(picture_view));
}
break;
case RTGUIK_RETURN:
{
rtgui_view_t* view;
rtgui_workbench_t* workbench;
/* close this view */
current_fn[0] = '\0';
/* remove view in workbench */
view = RTGUI_VIEW(widget);
workbench = RTGUI_WORKBENCH(RTGUI_WIDGET(view)->parent);
rtgui_workbench_remove_view(workbench, view);
rtgui_view_destroy(view);
picture_view = RT_NULL;
}
break;
}
}
return RT_FALSE;
}
return rtgui_view_event_handler(widget, event);
}
rtgui_view_t *picture_view_create(struct rtgui_workbench* workbench)
{
if (picture_view != RT_NULL)
{
rtgui_view_show(picture_view, RT_FALSE);
}
else
{
/* create picture view */
picture_view = rtgui_view_create("Picture Presentation");
rtgui_widget_set_event_handler(RTGUI_WIDGET(picture_view),
picture_view_event_handler);
rtgui_workbench_add_view(workbench, picture_view);
/* this view can be focused */
RTGUI_WIDGET(picture_view)->flag |= RTGUI_WIDGET_FLAG_FOCUSABLE;
}
return picture_view;
}
rtgui_view_t *picture_view_create_view_file(struct rtgui_workbench* workbench,
const char* filename)
{
if (picture_view != RT_NULL)
{
rtgui_view_show(picture_view, RT_FALSE);
}
else
{
strcpy(current_fn, filename);
/* create picture view */
picture_view = rtgui_view_create("Picture Presentation");
rtgui_widget_set_event_handler(RTGUI_WIDGET(picture_view),
picture_view_event_handler);
rtgui_workbench_add_view(workbench, picture_view);
/* this view can be focused */
RTGUI_WIDGET(picture_view)->flag |= RTGUI_WIDGET_FLAG_FOCUSABLE;
view_mode = VIEW_SINGLE_MODE;
}
return picture_view;
}
rtgui_view_t *picture_view_create_view_list(struct rtgui_workbench* workbench,
const char* list[], rt_uint8_t size)
{
if (picture_view != RT_NULL)
{
rtgui_view_show(picture_view, RT_FALSE);
}
else
{
picture_fn_list = list;
picture_fn_list_size = size;
picture_fn_list_current = 0;
strcpy(current_fn, picture_fn_list[picture_fn_list_current]);
/* create picture view */
picture_view = rtgui_view_create("Picture Presentation");
rtgui_widget_set_event_handler(RTGUI_WIDGET(picture_view),
picture_view_event_handler);
rtgui_workbench_add_view(workbench, picture_view);
/* this view can be focused */
RTGUI_WIDGET(picture_view)->flag |= RTGUI_WIDGET_FLAG_FOCUSABLE;
view_mode = VIEW_FN_LIST_MODE;
}
return picture_view;
}