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Eina: eina tiler example. 

SVN revision: 62113
This commit is contained in:
Jonas M. Gastal 2011-08-04 22:05:46 +00:00
parent 05e1dc49c6
commit 8b64d75531
4 changed files with 399 additions and 4 deletions
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3
legacy/eina/configure.ac
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@ -346,6 +346,8 @@ if test "x${enable_ememoa}" = "xyes" ; then
)
fi
PKG_CHECK_MODULES([ECORE_EVAS], [ecore-evas ecore], [build_tiler_example="yes"], [build_tiler_example="no"])
AM_CONDITIONAL([BUILD_TILER_EXAMPLE], [test "x${build_tiler_example}" = "xyes"])
### Checks for header files
AC_HEADER_ASSERT
@ -738,6 +740,7 @@ echo " Documentation........: ${build_doc}"
echo " Tests................: ${enable_tests}"
echo " Coverage.............: ${enable_coverage}"
echo " Examples.............: ${enable_build_examples}"
echo " Tiler Example........: ${build_tiler_example}"
echo " Examples installed...: ${enable_install_examples}"
echo " Benchmark............: ${enable_benchmark}"
if test "x${enable_benchmark}" = "xyes" ; then

9
legacy/eina/src/examples/Makefile.am
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@ -36,7 +36,8 @@ SRCS = \
eina_inlist_02.c \
eina_inlist_03.c \
eina_str_01.c \
eina_strbuf_01.c
eina_strbuf_01.c \
eina_tiler_01.c
pkglib_PROGRAMS =
@ -73,5 +74,11 @@ pkglib_PROGRAMS += \
eina_inlist_03 \
eina_str_01 \
eina_strbuf_01
if BUILD_TILER_EXAMPLE
AM_CPPFLAGS += @ECORE_EVAS_CFLAGS@
pkglib_PROGRAMS += eina_tiler_01
eina_tiler_01_LDADD = @ECORE_EVAS_LIBS@
endif
endif

316
legacy/eina/src/examples/eina_tiler_01.c Normal file
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@ -0,0 +1,316 @@
//Compile with:
//gcc `pkg-config --cflags --libs ecore-evas ecore evas` eina_tiler_01.c -o eina_tiler_01
#include <Ecore_Evas.h>
#include <Ecore.h>
#include <Evas.h>
#include <Eina.h>
#define WINDOW_PAD (20)
static Eina_Tiler *tiler;
static Eina_Rectangle *input_rects;
static unsigned int input_count;
static unsigned int input_idx = 0, input_color_idx = 0, output_color_idx = 0;
static Eina_List *output_objs = NULL;
static Evas_Coord maxw, maxh, winw, winh;
static Evas *evas;
static const struct color {
unsigned char r, g, b;
} colors[] = {
{255, 0, 0},
{0, 255, 0},
{0, 0, 255},
{255, 128, 0},
{0, 255, 128},
{128, 0, 255},
{255, 255, 0},
{0, 255, 255},
{255, 0, 255},
{255, 0, 128},
{128, 255, 0},
{0, 128, 255},
{128, 128, 0},
{0, 128, 128},
{128, 0, 128},
{128, 0, 0},
{0, 128, 0},
{0, 0, 128},
{255, 128, 0},
{0, 255, 128},
{128, 0, 255},
{64, 64, 0},
{0, 64, 64},
{64, 0, 64},
{128, 128, 0},
{0, 128, 128},
{128, 0, 128},
{255, 0, 128},
{128, 255, 0},
{0, 128, 255},
{128, 64, 0},
{0, 128, 64},
{64, 0, 128},
{128, 0, 64},
{64, 128, 0},
{0, 64, 128}
};
#define MAX_COLORS (sizeof(colors) / sizeof(colors[0]))
static void
add_text(const char *text, int x, int y, int w)
{
Evas_Object *o = evas_object_text_add(evas);
evas_object_color_set(o, 0, 0, 0, 255);
evas_object_move(o, x, y);
evas_object_resize(o, w, WINDOW_PAD);
evas_object_text_font_set(o, "Sans", 10);
evas_object_text_text_set(o, text);
evas_object_show(o);
}
static void
output_rects_reset(void)
{
Evas_Object *o;
EINA_LIST_FREE(output_objs, o)
evas_object_del(o);
output_color_idx = 0;
}
static void
add_input_rect(const Eina_Rectangle *r)
{
Evas_Object *o;
Evas_Coord bx, by;
bx = WINDOW_PAD;
by = WINDOW_PAD;
o = evas_object_rectangle_add(evas);
#define C(comp) (((int)colors[input_color_idx].comp * 128) / 255)
evas_object_color_set(o, C(r), C(g), C(b), 128);
#undef C
evas_object_move(o, r->x + bx, r->y + by);
evas_object_resize(o, r->w, r->h);
evas_object_show(o);
input_color_idx = (input_color_idx + 1) % MAX_COLORS;
bx += maxw + WINDOW_PAD;
o = evas_object_rectangle_add(evas);
evas_object_color_set(o, 32, 32, 32, 128);
evas_object_move(o, r->x + bx, r->y + by);
evas_object_resize(o, r->w, 1);
evas_object_layer_set(o, EVAS_LAYER_MAX);
evas_object_show(o);
o = evas_object_rectangle_add(evas);
evas_object_color_set(o, 32, 32, 32, 128);
evas_object_move(o, r->x + bx, r->y + by);
evas_object_resize(o, 1, r->h);
evas_object_layer_set(o, EVAS_LAYER_MAX);
evas_object_show(o);
o = evas_object_rectangle_add(evas);
evas_object_color_set(o, 32, 32, 32, 128);
evas_object_move(o, r->x + bx, r->y + by + r->h);
evas_object_resize(o, r->w, 1);
evas_object_layer_set(o, EVAS_LAYER_MAX);
evas_object_show(o);
o = evas_object_rectangle_add(evas);
evas_object_color_set(o, 32, 32, 32, 128);
evas_object_move(o, r->x + bx + r->w, r->y + by);
evas_object_resize(o, 1, r->h);
evas_object_layer_set(o, EVAS_LAYER_MAX);
evas_object_show(o);
}
static void
add_output_rect(const Eina_Rectangle *r)
{
Evas_Object *o = evas_object_rectangle_add(evas);
#define C(comp) (((int)colors[output_color_idx].comp * 128) / 255)
evas_object_color_set(o, C(r), C(g), C(b), 128);
#undef C
evas_object_move(o, r->x + maxw + 2 * WINDOW_PAD, r->y + WINDOW_PAD);
evas_object_resize(o, r->w, r->h);
evas_object_show(o);
output_color_idx = (output_color_idx + 1) % MAX_COLORS;
output_objs = eina_list_append(output_objs, o);
}
static Eina_Bool
process_input(void *data)
{
Eina_Iterator *itr;
Eina_Rectangle r, *r1;
unsigned int out = 0;
if (input_idx == input_count)
{
add_text("Done. Close the window to exit",
WINDOW_PAD, winh - WINDOW_PAD, winw - 2 * WINDOW_PAD);
return EINA_FALSE;
}
output_rects_reset();
r = input_rects[input_idx];
printf("Iteration #%u: %dx%d%+d%+d\n", input_idx, r.w, r.h, r.x, r.y);
input_idx++;
add_input_rect(&r);
eina_tiler_rect_add(tiler, &r);
itr = eina_tiler_iterator_new(tiler);
EINA_ITERATOR_FOREACH(itr, r1)
{
printf("\tOutput #%u: %dx%d%+d%+d\n", out, r1->w, r1->h, r1->x, r1->y);
add_output_rect(r1);
out++;
}
eina_iterator_free(itr);
return EINA_TRUE;
}
static void
usage(const char *progname)
{
fprintf(stderr,
"Usage:\n\n"
"\t%s <rect1> ... <rectN>\n\n"
"with rectangles being in the format:\n"
"\tWIDTHxHEIGHT<+->X<+->Y\n"
"examples:\n"
"\t100x100+10+10 - width=100, height=100 at x=10, y=10\n"
"\t150x50+5+6 - width=150, height=50 at x=5, y=6\n",
progname);
}
int
main(int argc, char *argv[])
{
Ecore_Evas *ee;
Evas_Object *o;
int i;
if (argc < 2)
{
usage(argv[0]);
return -2;
}
input_rects = calloc(argc - 1, sizeof(Eina_Rectangle));
input_count = 0;
maxw = 0;
maxh = 0;
for (i = 1; i < argc; i++)
{
Eina_Rectangle *r = input_rects + input_count;
char sx, sy;
if (sscanf(argv[i], "%dx%d%c%d%c%d",
&(r->w), &(r->h), &sx, &(r->x), &sy, &(r->y)) == 6)
{
if (sx == '-') r->x *= -1;
if (sy == '-') r->y *= -1;
if (maxw < r->x + r->w) maxw = r->x + r->w;
if (maxh < r->y + r->h) maxh = r->y + r->h;
input_count++;
}
else
fprintf(stderr, "ERROR: invalid rectangle ignored: %s\n", argv[i]);
}
if (input_count == 0)
{
fputs("ERROR: Could not find any valid rectangle. Exit!\n", stderr);
usage(argv[0]);
free(input_rects);
return -3;
}
if ((maxw == 0) || (maxh == 0))
{
fputs("ERROR: All rectangles with size 0x0. Exit!\n", stderr);
usage(argv[0]);
free(input_rects);
return -3;
}
ecore_evas_init();
ecore_init();
evas_init();
eina_init();
winw = 2 * maxw + 3 * WINDOW_PAD;
winh = maxh + 2 * WINDOW_PAD;
ee = ecore_evas_new(NULL, 0, 0, winw, winh, NULL);
if (!ee)
{
fputs("ERROR: Could not create window. Check ecore-evas install.\n",
stderr);
goto end;
}
evas = ecore_evas_get(ee);
o = evas_object_rectangle_add(evas);
evas_object_color_set(o, 255, 255, 255, 255);
evas_object_resize(o, winw, winh);
evas_object_show(o);
add_text("Input", WINDOW_PAD, 0, maxw);
o = evas_object_rectangle_add(evas);
evas_object_color_set(o, 200, 200, 200, 255);
evas_object_move(o, WINDOW_PAD, WINDOW_PAD);
evas_object_resize(o, maxw, maxh);
evas_object_show(o);
add_text("Output", maxw + 2 * WINDOW_PAD, 0, maxw);
o = evas_object_rectangle_add(evas);
evas_object_color_set(o, 200, 200, 200, 255);
evas_object_move(o, maxw + 2 * WINDOW_PAD, WINDOW_PAD);
evas_object_resize(o, maxw, maxh);
evas_object_show(o);
tiler = eina_tiler_new(maxw, maxh);
ecore_timer_add(2.0, process_input, NULL);
ecore_evas_show(ee);
ecore_main_loop_begin();
eina_list_free(output_objs);
eina_tiler_free(tiler);
ecore_evas_free(ee);
end:
free(input_rects);
eina_shutdown();
evas_shutdown();
ecore_shutdown();
ecore_evas_shutdown();
return 0;
}

75
legacy/eina/src/include/eina_tiler.h
View File

@ -23,6 +23,60 @@
#include "eina_iterator.h"
#include "eina_rectangle.h"
/**
* @page eina_tiler_example_01
* @dontinclude eina_tiler_01.c
*
* This is an example that illustrates how Eina_Tiler works for a given set of
* rectangles. The rectangles must be given in the command line in the form:
* <width>x<height>+<x offset>+<y offset>
* The example will show two panels, the first(input) will show the given
* rectangles(in different colors) and in the seconds(output) it will show the
* rectangles given by the tiler. The rectangles will be added one by one every
* two seconds. A lot of the example deals with actually painting the rectangles
* so we'll skip over quite a bit of code, but you can see all of it in @ref
* eina_tiler_01.c "eina_tiler_01.c".
*
* The first thing of note in our example is the creation of the tiler:
* @skipline eina_tiler_new
* @note @p maxw and @p maxh are calculated such that the tiler's size will
* fully encompass all given rectangles.
*
* We'll now look at the function that actually adds rectangles to our tiler. It
* first checks if we added all rectangles already and if so stops right there:
* @dontinclude eina_tiler_01.c
* @skip static Eina_Bool
* @until }
*
* Our function then clears all rectangles given to us by tiler from the last
* execution. It does this because each rectangle we add may change everything
* about the output of eina_tiler:
* @until output_rects_reset
*
* Next we get another rectangle, print it and show it in the input panel:
* @until add_input_rect
*
* We now come to the tiler stuff, we add our new rectangle to it and get a new
* iterator for the tiler:
* @until itr
*
* We now iterate over our tiler printing every rect it gives us and sowing it
* in the output panel:
* @until }
*
* We of course must remember to free our iterator and that's it for this
* function:
* @until }
*
* You should try many different inputs to see how the tiler works, here are a
* few suggestions:
* @li 100x100+0+0 100x100+200+200
* @li 100x100+0+0 100x100+5+5 100x100+10+10 100x100+15+15 100x100+20+20
* @li 100x100+0+0 100x100+100+100 100x100+200+0 100x100+0+200 100x100+200+200
* @li 10x10+0+0 10x10+10+10 10x10+20+0 10x10+0+20 10x10+20+20
*
* @example eina_tiler_01.c
*/
/**
* @addtogroup Eina_Data_Types_Group Data Types
*
@ -44,14 +98,14 @@
* to re-render in the form of a set of non-overlapping rectangles that covers
* the whole area that needs re-rendering.
*
* The following is a pseudo-code showing some simple use of Eina_Tiler:
* The following is pseudo-code showing some simple use of Eina_Tiler:
* @code
* tiler = eina_tiler_new(MY_CANVAS_WIDTH, MY_CANVAS_HEIGHT);
* EINA_LIST_FOREACH(list_of_areas_that_need_re_rendering, l, rect)
* eina_tiler_add(tiler, rect);
* eina_tiler_add(tiler, rect);
* itr = eina_tiler_iterator_new(tiler);
* EINA_ITERATOR_FOREACH(itr, rect)
* my_function_that_repaints_areas_of_the_canvas(rect);
* my_function_that_repaints_areas_of_the_canvas(rect);
* @endcode
*
* @see eina_tiler_new()
@ -69,6 +123,21 @@
* the area that will be rendered into tiles. It's customary to, then create one
* Eina_Tiler for each tile.
*
* The following is pseudo-code showing a very simplified use of grid slicer
* together with Eina_Tiler:
* @code
* itr = eina_tile_grid_slicer_iterator_new(0, 0, MY_CANVAS_WIDTH, MY_CANVAS_HEIGHT, TILE_WIDTH, TILE_HEIGHT);
* EINA_ITERATOR_FOREACH(itr, grid_info)
* {
* tiler = eina_tiler_new(grid_info->rect.w, grid_info->rect.w);
* EINA_LIST_FOREACH(list_of_areas_that_need_re_rendering_in_this_tile, l, rect)
* eina_tiler_add(tiler, rect);
* itr = eina_tiler_iterator_new(tiler);
* EINA_ITERATOR_FOREACH(itr, rect)
* my_function_that_repaints_areas_of_the_canvas(rect);
* }
* @endcode
*
* @see eina_tiler_new()
* @see eina_tiler_rect_add()
* @see eina_tile_grid_slicer_setup()