evas-text.c

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evas-text.c
#ifdef HAVE_CONFIG_H
#include "config.h"
#else
#define PACKAGE_EXAMPLES_DIR "."
#endif
#include <Ecore.h>
#include <Ecore_Evas.h>
#include <stdio.h>
#include <errno.h>
#define WIDTH (320)
#define HEIGHT (240)
#define GREY {190, 190, 190, 255}
#define BLACK {0, 0, 0, 255}
#define WHITE {255, 255, 255, 255}
#define RED {255, 0, 0, 255}
#define GREEN {0, 255, 0, 255}
#define BLUE {0, 0, 255, 255}
#define POINTER_CYCLE(_ptr, _array) \
do \
{ \
if ((unsigned int)(((unsigned char *)(_ptr)) - ((unsigned char *)(_array))) >= \
sizeof(_array)) \
_ptr = _array; \
} \
while(0)
static const char *commands = \
"commands are:\n"
"\tt - change text's current style\n"
"\tz - change text's font size\n"
"\tf - change text's font family\n"
"\tb - change text's base color\n"
"\ts - change text's \'shadow\' color\n"
"\to - change text's \'outline\' color\n"
"\tw - change text's \'glow\' color\n"
"\tg - change text's \'glow 2\' color\n"
"\th - print help\n";
static const char *border_img_path = PACKAGE_EXAMPLES_DIR "/red.png";
struct color_tuple
{
int r, g, b, a;
};
struct text_preset_data
{
const char **font_ptr;
const char *font[3];
struct color_tuple *text_ptr;
struct color_tuple text[6];
struct color_tuple *shadow_ptr;
struct color_tuple shadow[4];
struct color_tuple *outline_ptr;
struct color_tuple outline[4];
struct color_tuple *glow_ptr;
struct color_tuple glow[4];
struct color_tuple *glow2_ptr;
struct color_tuple glow2[4];
};
struct test_data
{
Ecore_Evas *ee;
Evas *evas;
struct text_preset_data t_data;
Evas_Object *text, *bg, *border;
};
static struct test_data d = {0};
static void
_on_destroy(Ecore_Evas *ee EINA_UNUSED)
{
ecore_main_loop_quit();
}
/* Keep the example's window size in sync with the background image's size */
static void
_canvas_resize_cb(Ecore_Evas *ee)
{
int w, h;
ecore_evas_geometry_get(ee, NULL, NULL, &w, &h);
evas_object_resize(d.bg, w, h);
}
static const char *
_text_style_type_to_str(Evas_Text_Style_Type mode)
{
switch (mode)
{
case EVAS_TEXT_STYLE_PLAIN:
return "plain";
case EVAS_TEXT_STYLE_SHADOW:
return "shadow";
case EVAS_TEXT_STYLE_OUTLINE:
return "outline";
case EVAS_TEXT_STYLE_SOFT_OUTLINE:
return "soft outline";
case EVAS_TEXT_STYLE_GLOW:
return "glow";
case EVAS_TEXT_STYLE_OUTLINE_SHADOW:
return "outline shadow";
case EVAS_TEXT_STYLE_FAR_SHADOW:
return "far shadow";
case EVAS_TEXT_STYLE_OUTLINE_SOFT_SHADOW:
return "outline soft shadow";
case EVAS_TEXT_STYLE_SOFT_SHADOW:
return "soft shadow";
case EVAS_TEXT_STYLE_FAR_SOFT_SHADOW:
return "far soft shadow";
default:
return "invalid";
}
}
static void
_on_keydown(void *data EINA_UNUSED,
Evas *evas EINA_UNUSED,
Evas_Object *o EINA_UNUSED,
void *einfo)
{
Evas_Event_Key_Down *ev = einfo;
if (strcmp(ev->key, "h") == 0) /* print help */
{
printf("%s", commands);
return;
}
if (strcmp(ev->key, "t") == 0) /* change text's current style */
{
Evas_Text_Style_Type type = evas_object_text_style_get(d.text);
type = (type + 1) % 10;
evas_object_text_style_set(d.text, type);
printf("Changing text's style to \'%s\'\n",
_text_style_type_to_str(type));
return;
}
if (strcmp(ev->key, "f") == 0) /* change text's font */
{
int sz;
(d.t_data.font_ptr)++;
evas_object_text_font_get(d.text, NULL, &sz);
POINTER_CYCLE(d.t_data.font_ptr, d.t_data.font);
evas_object_text_font_set(d.text, *d.t_data.font_ptr, sz);
printf("Changing text's font to %s\n",
*d.t_data.font_ptr);
return;
}
if (strcmp(ev->key, "b") == 0) /* change text's base color */
{
(d.t_data.text_ptr)++;
POINTER_CYCLE(d.t_data.text_ptr, d.t_data.text);
evas_object_color_set(
d.text, d.t_data.text_ptr->r, d.t_data.text_ptr->g,
d.t_data.text_ptr->b, d.t_data.text_ptr->a);
printf("Changing base color for text to (%d, %d, %d, %d)\n",
d.t_data.text_ptr->r, d.t_data.text_ptr->g,
d.t_data.text_ptr->b, d.t_data.text_ptr->a);
return;
}
if (strcmp(ev->key, "g") == 0) /* change text's glow 2 color */
{
(d.t_data.glow2_ptr)++;
POINTER_CYCLE(d.t_data.glow2_ptr, d.t_data.glow2);
evas_object_text_glow2_color_set(
d.text, d.t_data.glow2_ptr->r, d.t_data.glow2_ptr->g,
d.t_data.glow2_ptr->b, d.t_data.glow2_ptr->a);
printf("Changing glow 2 color for text to (%d, %d, %d, %d)\n",
d.t_data.glow2_ptr->r, d.t_data.glow2_ptr->g,
d.t_data.glow2_ptr->b, d.t_data.glow2_ptr->a);
return;
}
if (strcmp(ev->key, "w") == 0) /* change text's glow color */
{
(d.t_data.glow_ptr)++;
POINTER_CYCLE(d.t_data.glow_ptr, d.t_data.glow);
evas_object_text_glow_color_set(
d.text, d.t_data.glow_ptr->r, d.t_data.glow_ptr->g,
d.t_data.glow_ptr->b, d.t_data.glow_ptr->a);
printf("Changing glow color for text to (%d, %d, %d, %d)\n",
d.t_data.glow_ptr->r, d.t_data.glow_ptr->g,
d.t_data.glow_ptr->b, d.t_data.glow_ptr->a);
return;
}
if (strcmp(ev->key, "o") == 0) /* change text's outline color */
{
(d.t_data.outline_ptr)++;
POINTER_CYCLE(d.t_data.outline_ptr, d.t_data.outline);
evas_object_text_outline_color_set(
d.text, d.t_data.outline_ptr->r, d.t_data.outline_ptr->g,
d.t_data.outline_ptr->b, d.t_data.outline_ptr->a);
printf("Changing outline color for text to (%d, %d, %d, %d)\n",
d.t_data.outline_ptr->r, d.t_data.outline_ptr->g,
d.t_data.outline_ptr->b, d.t_data.outline_ptr->a);
return;
}
if (strcmp(ev->key, "s") == 0) /* change text's shadow color */
{
(d.t_data.shadow_ptr)++;
POINTER_CYCLE(d.t_data.shadow_ptr, d.t_data.shadow);
evas_object_text_shadow_color_set(
d.text, d.t_data.shadow_ptr->r, d.t_data.shadow_ptr->g,
d.t_data.shadow_ptr->b, d.t_data.shadow_ptr->a);
printf("Changing shadow color for text to (%d, %d, %d, %d)\n",
d.t_data.shadow_ptr->r, d.t_data.shadow_ptr->g,
d.t_data.shadow_ptr->b, d.t_data.shadow_ptr->a);
return;
}
if (strcmp(ev->key, "z") == 0) /* change text's font size */
{
const char *font;
int size;
evas_object_text_font_get(d.text, &font, &size);
size = (size + 10) % 50;
if (!size) size = 10;
evas_object_text_font_set(d.text, font, size);
printf("Changing text's font size to %d\n", size);
return;
}
}
int
main(void)
{
int size;
const char *font;
if (!ecore_evas_init())
return EXIT_FAILURE;
/* init values one is going to cycle through while running this
* example */
struct text_preset_data init_data =
{
.font = {"DejaVu", "Courier", "Utopia"},
.text = {BLACK, WHITE, GREY, RED, GREEN, BLUE},
.shadow = {WHITE, BLUE, GREEN, RED},
.outline = {WHITE, RED, GREEN, BLUE},
.glow = {WHITE, BLUE, GREEN, RED},
.glow2 = {WHITE, RED, BLUE, GREEN}
};
d.t_data = init_data;
d.t_data.font_ptr = d.t_data.font;
d.t_data.text_ptr = d.t_data.text;
d.t_data.glow_ptr = d.t_data.glow;
d.t_data.glow2_ptr = d.t_data.glow2;
d.t_data.outline_ptr = d.t_data.outline;
d.t_data.shadow_ptr = d.t_data.shadow;
/* this will give you a window with an Evas canvas under the first
* engine available */
d.ee = ecore_evas_new(NULL, 10, 10, WIDTH, HEIGHT, NULL);
if (!d.ee)
goto error;
ecore_evas_callback_destroy_set(d.ee, _on_destroy);
ecore_evas_callback_resize_set(d.ee, _canvas_resize_cb);
ecore_evas_show(d.ee);
/* the canvas pointer, de facto */
d.evas = ecore_evas_get(d.ee);
d.bg = evas_object_rectangle_add(d.evas);
evas_object_color_set(d.bg, 255, 255, 255, 255); /* white bg */
evas_object_move(d.bg, 0, 0); /* at canvas' origin */
evas_object_resize(d.bg, WIDTH, HEIGHT); /* covers full canvas */
evas_object_show(d.bg);
evas_object_focus_set(d.bg, EINA_TRUE);
evas_object_event_callback_add(
d.bg, EVAS_CALLBACK_KEY_DOWN, _on_keydown, NULL);
d.text = evas_object_text_add(d.evas);
evas_object_text_style_set(d.text, EVAS_TEXT_STYLE_PLAIN);
/* let the pre-set things be enforced */
evas_object_color_set(
d.text, d.t_data.text_ptr->r, d.t_data.text_ptr->g,
d.t_data.text_ptr->b, d.t_data.text_ptr->a);
evas_object_text_glow_color_set(
d.text, d.t_data.glow_ptr->r, d.t_data.glow_ptr->g,
d.t_data.glow_ptr->b, d.t_data.glow_ptr->a);
evas_object_text_glow2_color_set(
d.text, d.t_data.glow2_ptr->r, d.t_data.glow2_ptr->g,
d.t_data.glow2_ptr->b, d.t_data.glow2_ptr->a);
evas_object_text_outline_color_set(
d.text, d.t_data.outline_ptr->r, d.t_data.outline_ptr->g,
d.t_data.outline_ptr->b, d.t_data.outline_ptr->a);
evas_object_text_shadow_color_set(
d.text, d.t_data.shadow_ptr->r, d.t_data.shadow_ptr->g,
d.t_data.shadow_ptr->b, d.t_data.shadow_ptr->a);
evas_object_text_font_set(d.text, *d.t_data.font_ptr, 30);
evas_object_text_text_set(d.text, "sample text");
evas_object_resize(d.text, (3 * WIDTH) / 4, HEIGHT / 4);
evas_object_move(d.text, WIDTH / 8, (3 * HEIGHT) / 8);
evas_object_show(d.text);
evas_object_text_font_get(d.text, &font, &size);
printf("Adding text object with font %s, size %d\n", font, size);
/* this is a border around the text object above, here just to
* emphasize its geometry */
d.border = evas_object_image_filled_add(d.evas);
evas_object_image_file_set(d.border, border_img_path, NULL);
evas_object_image_border_set(d.border, 3, 3, 3, 3);
evas_object_image_border_center_fill_set(d.border, EVAS_BORDER_FILL_NONE);
evas_object_resize(d.border, ((3 * WIDTH) / 4) + 3, (HEIGHT / 4) + 3);
evas_object_move(d.border, (WIDTH / 8) - 3, ((3 * HEIGHT) / 8) - 3);
evas_object_show(d.border);
printf("%s", commands);
ecore_main_loop_begin();
ecore_evas_free(d.ee);
ecore_evas_shutdown();
return 0;
error:
fprintf(stderr, "error: Requires at least one Evas engine built and linked"
" to ecore-evas for this example to run properly.\n");
ecore_evas_shutdown();
return -1;
}
Ecore_Evas.h
Evas wrapper functions.
EVAS_CALLBACK_KEY_DOWN
@ EVAS_CALLBACK_KEY_DOWN
Key Press Event.
Definition: Evas_Common.h:430
ecore_evas_init
EAPI int ecore_evas_init(void)
Inits the Ecore_Evas system.
Definition: ecore_evas.c:602
ecore_evas_callback_destroy_set
EAPI void ecore_evas_callback_destroy_set(Ecore_Evas *ee, Ecore_Evas_Event_Cb func)
Sets a callback for Ecore_Evas destroy events.
Definition: ecore_evas.c:1185
ecore_evas_show
EAPI void ecore_evas_show(Ecore_Evas *ee)
Shows an Ecore_Evas' window.
Definition: ecore_evas.c:1480
ecore_evas_get
EAPI Evas * ecore_evas_get(const Ecore_Evas *ee)
Gets an Ecore_Evas's Evas.
Definition: ecore_evas.c:1300
ecore_evas_geometry_get
EAPI void ecore_evas_geometry_get(const Ecore_Evas *ee, int *x, int *y, int *w, int *h)
Gets the geometry of an Ecore_Evas.
Definition: ecore_evas.c:1362
ecore_evas_new
EAPI Ecore_Evas * ecore_evas_new(const char *engine_name, int x, int y, int w, int h, const char *extra_options)
Creates a new Ecore_Evas based on engine name and common parameters.
Definition: ecore_evas.c:1039
ecore_evas_callback_resize_set
EAPI void ecore_evas_callback_resize_set(Ecore_Evas *ee, Ecore_Evas_Event_Cb func)
Sets a callback for Ecore_Evas resize events.
Definition: ecore_evas.c:1140
ecore_evas_shutdown
EAPI int ecore_evas_shutdown(void)
Shuts down the Ecore_Evas system.
Definition: ecore_evas.c:666
ecore_evas_free
EAPI void ecore_evas_free(Ecore_Evas *ee)
Frees an Ecore_Evas.
Definition: ecore_evas.c:1083
ecore_main_loop_quit
void ecore_main_loop_quit(void)
Quits the main loop once all the events currently on the queue have been processed.
Definition: ecore_main.c:1321
ecore_main_loop_begin
void ecore_main_loop_begin(void)
Runs the application main loop.
Definition: ecore_main.c:1311
EINA_TRUE
#define EINA_TRUE
boolean value TRUE (numerical value 1)
Definition: eina_types.h:539
EINA_UNUSED
#define EINA_UNUSED
Used to indicate that a function parameter is purposely unused.
Definition: eina_types.h:339
Evas
Eo Evas
An opaque handle to an Evas canvas.
Definition: Evas_Common.h:163
evas_object_show
EVAS_API void evas_object_show(Evas_Object *eo_obj)
Makes the given Evas object visible.
Definition: evas_object_main.c:1814
evas_object_color_set
EVAS_API void evas_object_color_set(Evas_Object *obj, int r, int g, int b, int a)
Sets the general/main color of the given Evas object to the given one.
Definition: evas_object_main.c:2024
evas_object_event_callback_add
EVAS_API void evas_object_event_callback_add(Evas_Object *eo_obj, Evas_Callback_Type type, Evas_Object_Event_Cb func, const void *data)
Add (register) a callback function to a given Evas object event.
Definition: evas_callbacks.c:478
evas_object_move
EVAS_API void evas_object_move(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
Move the given Evas object to the given location inside its canvas' viewport.
Definition: evas_object_main.c:1171
Evas_Object
Efl_Canvas_Object Evas_Object
An Evas Object handle.
Definition: Evas_Common.h:185
evas_object_focus_set
EVAS_API void evas_object_focus_set(Efl_Canvas_Object *obj, Eina_Bool focus)
Indicates that this object is the keyboard event receiver on its canvas.
Definition: efl_canvas_object_eo.legacy.c:39
evas_object_resize
EVAS_API void evas_object_resize(Evas_Object *obj, Evas_Coord w, Evas_Coord h)
Changes the size of the given Evas object.
Definition: evas_object_main.c:1236
evas_object_image_border_set
EVAS_API void evas_object_image_border_set(Evas_Object *obj, int l, int r, int t, int b)
Dimensions of this image's border, a region that does not scale with the center area.
Definition: evas_image_legacy.c:117
evas_object_image_border_center_fill_set
EVAS_API void evas_object_image_border_center_fill_set(Evas_Object *obj, Evas_Border_Fill_Mode fill)
Specifies how the center part of the object (not the borders) should be drawn when EFL is rendering i...
Definition: evas_image_legacy.c:145
evas_object_image_file_set
EVAS_API void evas_object_image_file_set(Evas_Object *obj, const char *file, const char *key)
Set the source file from where an image object must fetch the real image data (it may be an Eet file,...
Definition: evas_image_legacy.c:194
evas_object_image_filled_add
EVAS_API Evas_Object * evas_object_image_filled_add(Evas *eo_e)
Creates a new image object that automatically scales its bound image to the object's area,...
Definition: evas_image_legacy.c:35
EVAS_BORDER_FILL_NONE
@ EVAS_BORDER_FILL_NONE
Image's center region is not to be rendered.
Definition: Evas_Legacy.h:5721
evas_object_rectangle_add
EVAS_API Evas_Object * evas_object_rectangle_add(Evas *e)
Adds a rectangle to the given evas.
Definition: evas_object_rectangle.c:78
evas_object_text_outline_color_set
EVAS_API void evas_object_text_outline_color_set(Evas_Text *obj, int r, int g, int b, int a)
Controls the outline color for the given text object.
Definition: evas_text_eo.legacy.c:39
evas_object_text_text_set
EVAS_API void evas_object_text_text_set(Eo *obj, const char *text)
Sets the text string to be displayed by the given text object.
Definition: evas_object_text.c:2356
evas_object_text_font_get
EVAS_API void evas_object_text_font_get(const Eo *obj, const char **font, Evas_Font_Size *size)
Retrieve the font family and size in use on a given text object.
Definition: evas_object_text.c:2349
Evas_Text_Style_Type
Evas_Text_Style_Type
Types of styles to be applied on text objects.
Definition: Evas_Legacy.h:6364
evas_object_text_style_set
EVAS_API void evas_object_text_style_set(Evas_Text *obj, Evas_Text_Style_Type style)
Controls the style to apply on the given text object.
Definition: evas_text_eo.legacy.c:63
evas_object_text_shadow_color_set
EVAS_API void evas_object_text_shadow_color_set(Evas_Text *obj, int r, int g, int b, int a)
Controls the shadow color for the given text object.
Definition: evas_text_eo.legacy.c:3
evas_object_text_glow2_color_set
EVAS_API void evas_object_text_glow2_color_set(Evas_Text *obj, int r, int g, int b, int a)
Sets the 'glow 2' color for the given text object.
Definition: evas_text_eo.legacy.c:51
evas_object_text_font_set
EVAS_API void evas_object_text_font_set(Eo *obj, const char *font, Evas_Font_Size size)
Set the font family or filename, and size on a given text object.
Definition: evas_object_text.c:2340
evas_object_text_add
EVAS_API Evas_Object * evas_object_text_add(Evas *e)
Creates a new text object on the provided canvas.
Definition: evas_object_text.c:366
evas_object_text_glow_color_set
EVAS_API void evas_object_text_glow_color_set(Evas_Text *obj, int r, int g, int b, int a)
Sets the glow color for the given text object.
Definition: evas_text_eo.legacy.c:75
evas_object_text_style_get
EVAS_API Evas_Text_Style_Type evas_object_text_style_get(const Evas_Text *obj)
Controls the style to apply on the given text object.
Definition: evas_text_eo.legacy.c:69
EVAS_TEXT_STYLE_SOFT_OUTLINE
@ EVAS_TEXT_STYLE_SOFT_OUTLINE
text with a soft outline
Definition: Evas_Legacy.h:6368
EVAS_TEXT_STYLE_FAR_SHADOW
@ EVAS_TEXT_STYLE_FAR_SHADOW
text with (far) shadow underneath
Definition: Evas_Legacy.h:6371
EVAS_TEXT_STYLE_OUTLINE_SHADOW
@ EVAS_TEXT_STYLE_OUTLINE_SHADOW
text with both outline and shadow effects
Definition: Evas_Legacy.h:6370
EVAS_TEXT_STYLE_SOFT_SHADOW
@ EVAS_TEXT_STYLE_SOFT_SHADOW
text with (soft) shadow underneath
Definition: Evas_Legacy.h:6373
EVAS_TEXT_STYLE_OUTLINE
@ EVAS_TEXT_STYLE_OUTLINE
text with an outline
Definition: Evas_Legacy.h:6367
EVAS_TEXT_STYLE_OUTLINE_SOFT_SHADOW
@ EVAS_TEXT_STYLE_OUTLINE_SOFT_SHADOW
text with outline and soft shadow effects combined
Definition: Evas_Legacy.h:6372
EVAS_TEXT_STYLE_FAR_SOFT_SHADOW
@ EVAS_TEXT_STYLE_FAR_SOFT_SHADOW
text with (far soft) shadow underneath
Definition: Evas_Legacy.h:6374
EVAS_TEXT_STYLE_PLAIN
@ EVAS_TEXT_STYLE_PLAIN
plain, standard text
Definition: Evas_Legacy.h:6365
EVAS_TEXT_STYLE_GLOW
@ EVAS_TEXT_STYLE_GLOW
text with a glow effect
Definition: Evas_Legacy.h:6369
EVAS_TEXT_STYLE_SHADOW
@ EVAS_TEXT_STYLE_SHADOW
text with shadow underneath
Definition: Evas_Legacy.h:6366
_Evas_Event_Key_Down
Key press event.
Definition: Evas_Legacy.h:314
_Evas_Event_Key_Down::key
const char * key
The logical key : (eg shift+1 == exclamation)
Definition: Evas_Legacy.h:320