forked from enlightenment/efl
274 lines
8.0 KiB
C
274 lines
8.0 KiB
C
#define EFL_BETA_API_SUPPORT 1
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#include <Efl_Ui.h>
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/**
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* Example of canvas textblock obstacles.
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*
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* You start with two registered obstacle objects. They are not visible
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* at first, so the canvas textblock simply shows the text that has been set to it.
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* Once the obstacle is visible (show/hide keys in the example), the text will
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* wrap around it.
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* This example allows you to test two obstacles registered to the same
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* canvas textblock object. Also, you can play with size and position for each.
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* Use the 'h' key to show the provided options for this test.
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*
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* @verbatim
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* gcc -g efl_canvas_textblock_obstacles_example.c -o efl_canvas_textblock_obstacles_example `pkg-config --cflags --libs elementary`
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* @endverbatim
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*/
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#define WIDTH (360)
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#define HEIGHT (240)
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#define POINTER_CYCLE(_ptr, _array) \
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do \
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{ \
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if ((unsigned int)(((unsigned char *)(_ptr)) - ((unsigned char *)(_array))) >= \
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sizeof(_array)) \
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_ptr = _array; \
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} \
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while(0)
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static const char *commands = \
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"commands are:\n"
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"\tt - change currently controlled obstacle\n"
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"\tv - show/hide current obstacle\n"
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"\ts - cycle current obstacle's size\n"
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"\tp - change current obstacle's position (random)\n"
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"\tw - cycle text wrapping modes (none/word/char/mixed)\n"
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"\th - print help\n";
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struct text_preset_data
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{
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const char **font_ptr;
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const char *font[3];
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const char **wrap_ptr;
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const char *wrap[4];
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int *obs_size_ptr;
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int obs_size[3];
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Eo **obs_ptr; /* pointer to the currently controlled obstacle object */
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Eo *obs[2];
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};
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struct test_data
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{
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Eo *win, *box, *bg, *text;
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struct text_preset_data t_data;
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Eina_Size2D size;
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};
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static struct test_data d = {0};
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static unsigned int
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_getrand(unsigned int low, unsigned int high)
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{
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return (rand() % (high - low)) + low;
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}
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static void
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_style_set(const char *wrap)
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{
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char buf[2000];
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snprintf(buf,
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2000,
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"font=Sans font_size=16 color=#000 wrap=%s",
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wrap);
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efl_canvas_textblock_style_apply(d.text, buf);
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}
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static void
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_key_down(void *data EINA_UNUSED, const Efl_Event *ev)
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{
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const char *key = efl_input_key_string_get(ev->info);
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if (!key)
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return;
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if (strcmp(key, "h") == 0) /* print help */
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{
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printf("%s\n", commands);
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return;
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}
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if (strcmp(key, "t") == 0) /* change obstacle type */
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{
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(d.t_data.obs_ptr)++;
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POINTER_CYCLE(d.t_data.obs_ptr, d.t_data.obs);
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printf("Now controlling obstacle: %p\n", *d.t_data.obs_ptr);
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return;
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}
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if (strcmp(key, "v") == 0) /* change obstacle visibility */
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{
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Eo *obj = *d.t_data.obs_ptr;
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if (efl_gfx_entity_visible_get(obj))
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efl_gfx_entity_visible_set(obj, EINA_FALSE);
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else
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efl_gfx_entity_visible_set(obj, EINA_TRUE);
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printf("Show/hide toggle for obstacle %p\n",
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*d.t_data.obs_ptr);
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efl_canvas_textblock_obstacles_update(d.text);
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return;
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}
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if (strcmp(key, "s") == 0) /* change obstacle size */
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{
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(d.t_data.obs_size_ptr)++;
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POINTER_CYCLE(d.t_data.obs_size_ptr, d.t_data.obs_size);
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efl_gfx_entity_size_set(*d.t_data.obs_ptr, EINA_SIZE2D(*d.t_data.obs_size_ptr, *d.t_data.obs_size_ptr));
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efl_canvas_textblock_obstacles_update(d.text);
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printf("Changing obstacle size to: %d,%d\n",
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*d.t_data.obs_size_ptr, *d.t_data.obs_size_ptr);
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return;
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}
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if (strcmp(key, "p") == 0) /* change obstacle position */
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{
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int x, y;
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x = _getrand(0, d.size.w);
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y = _getrand(0, d.size.h);
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efl_gfx_entity_position_set(*d.t_data.obs_ptr, EINA_POSITION2D(x, y));
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efl_canvas_textblock_obstacles_update(d.text);
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printf("Changing obstacles position\n");
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efl_gfx_entity_position_set(*d.t_data.obs_ptr, EINA_POSITION2D(x, y));
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Eina_Position2D r_rec = efl_gfx_entity_position_get(d.t_data.obs[0]);
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Eina_Position2D g_rec = efl_gfx_entity_position_get(d.t_data.obs[1]);
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printf("Obstacle #1 (red) : [%d,%d]\n", r_rec.x, r_rec.y);
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printf("Obstacle #2 (green): [%d,%d]\n", g_rec.x, g_rec.y);
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return;
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}
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if (strcmp(key, "w") == 0) /* change obstacle position */
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{
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(d.t_data.wrap_ptr)++;
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POINTER_CYCLE(d.t_data.wrap_ptr, d.t_data.wrap);
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printf("Changing wrap mode to: %s\n",
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*d.t_data.wrap_ptr);
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_style_set(*d.t_data.wrap_ptr);
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efl_canvas_textblock_obstacles_update(d.text);
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return;
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}
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}
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static void
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_win_resize(void *data EINA_UNUSED, const Efl_Event *ev)
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{
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Eina_Size2D sz;
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sz = efl_gfx_entity_size_get(ev->object);
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efl_gfx_entity_size_set(d.bg, sz);
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efl_gfx_entity_size_set(d.text, sz);
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d.size = sz;
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}
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static void
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_text_init()
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{
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_style_set("word");
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efl_text_markup_set(d.text,
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"This example text demonstrates the textblock object"
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" with obstacle objects support."
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" Any evas object <item size=72x16></item>can register itself as an obstacle to the textblock"
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" object. Upon regi<color=#0ff>stering, it aff</color>ects the layout of the text in"
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" certain situations. Usually, when the obstacle shows above the text"
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" area, it will cause the layout of the text to split and move"
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" parts of it, so that all text area is apparent."
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);
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}
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static void
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_gui_quit_cb(void *data EINA_UNUSED, const Efl_Event *event EINA_UNUSED)
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{
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efl_exit(0);
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}
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static void
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_gui_setup()
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{
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/* init values one is going to cycle through while running this
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* example */
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struct text_preset_data init_data =
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{
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.font = {"DejaVu", "Courier", "Utopia"},
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.wrap = {"word", "char", "mixed", "none"},
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.obs_size = {50, 70, 100},
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.obs = {NULL, NULL},
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};
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d.t_data = init_data;
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d.t_data.font_ptr = d.t_data.font;
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d.t_data.obs_size_ptr = d.t_data.obs_size;
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d.t_data.obs_ptr = d.t_data.obs;
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d.win = efl_add(EFL_UI_WIN_CLASS, efl_main_loop_get(),
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efl_text_set(efl_added, "Obstacles Example"),
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efl_ui_win_autodel_set(efl_added, EINA_TRUE));
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efl_gfx_entity_size_set(d.win, EINA_SIZE2D(WIDTH, HEIGHT));
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printf("Window size set to [%d,%d]\n", WIDTH, HEIGHT);
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efl_event_callback_add(d.win, EFL_UI_WIN_EVENT_DELETE_REQUEST, _gui_quit_cb, NULL);
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efl_event_callback_add(d.win, EFL_GFX_ENTITY_EVENT_SIZE_CHANGED, _win_resize, NULL);
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efl_event_callback_add(d.win, EFL_EVENT_KEY_DOWN, _key_down, NULL);
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d.bg = efl_add(EFL_CANVAS_RECTANGLE_CLASS, d.win,
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efl_gfx_color_set(efl_added, 255, 255, 255, 255));
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efl_gfx_entity_size_set(d.bg, EINA_SIZE2D(WIDTH, HEIGHT));
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efl_gfx_entity_position_set(d.bg, EINA_POSITION2D(0, 0));
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d.text = efl_add(EFL_CANVAS_TEXTBLOCK_CLASS, d.win,
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efl_text_multiline_set(efl_added, EINA_TRUE));
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_text_init();
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efl_gfx_entity_size_set(d.text, EINA_SIZE2D(WIDTH, HEIGHT));
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efl_gfx_entity_position_set(d.text, EINA_POSITION2D(0, 0));
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d.size.w = WIDTH;
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d.size.h = HEIGHT;
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/* init obstacles */
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d.t_data.obs[0] = efl_add(EFL_CANVAS_RECTANGLE_CLASS, d.win,
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efl_gfx_color_set(efl_added, 255, 0, 0, 255));
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efl_gfx_entity_size_set(d.t_data.obs[0], EINA_SIZE2D(50,50));
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d.t_data.obs[1] = efl_add(EFL_CANVAS_RECTANGLE_CLASS, d.win,
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efl_gfx_color_set(efl_added, 0, 255, 0, 255));
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efl_gfx_entity_size_set(d.t_data.obs[1], EINA_SIZE2D(50,50));
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efl_canvas_textblock_obstacle_add(d.text, d.t_data.obs[0]);
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efl_canvas_textblock_obstacle_add(d.text, d.t_data.obs[1]);
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printf("%s\n", commands);
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}
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EAPI_MAIN void
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efl_main(void *data EINA_UNUSED, const Efl_Event *ev EINA_UNUSED)
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{
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_gui_setup();
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}
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EFL_MAIN()
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