int
main (int argc,
char** argv)
{
cairo_surface_t* surface = NULL;
cairo_t* cr = NULL;
raico_blur_t* blur = NULL;
// create and setup image-surface and context
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
WIDTH,
HEIGHT);
if (cairo_surface_status (surface) != CAIRO_STATUS_SUCCESS)
{
g_debug ("Could not create image-surface!");
return 1;
}
cr = cairo_create (surface);
if (cairo_status (cr) != CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy (surface);
g_debug ("Could not create cairo-context!");
return 2;
}
// create and setup blur
blur = raico_blur_create (RAICO_BLUR_QUALITY_LOW);
raico_blur_set_radius (blur, 5);
// draw something
cairo_scale (cr, WIDTH, HEIGHT);
cairo_set_source_rgba (cr, 1.0f, 1.0f, 1.0f, 1.0f);
cairo_paint (cr);
cairo_set_source_rgba (cr, 0.0f, 0.0f, 0.0f, 1.0f);
cairo_set_line_width (cr, 0.02f);
cairo_arc (cr, 0.5f, 0.5f, 0.4f, 0.0f, 360.0f * G_PI / 180.0f);
cairo_stroke (cr);
// now blur it
raico_blur_apply (blur, surface);
// save surface to a PNG-file
cairo_surface_write_to_png (surface, "./raico-result.png");
g_print ("See file raico-result.png in current directory for output.\n");
// clean up
cairo_destroy (cr);
cairo_surface_destroy (surface);
raico_blur_destroy (blur);
return 0;
}
void
setup_tile (gint w, gint h)
{
cairo_status_t status;
cairo_t* cr = NULL;
cairo_surface_t* cr_surf = NULL;
cairo_surface_t* tmp = NULL;
cairo_surface_t* dummy_surf = NULL;
cairo_surface_t* norm_surf = NULL;
cairo_surface_t* blur_surf = NULL;
gdouble width = (gdouble) w;
gdouble height = (gdouble) h;
raico_blur_t* blur = NULL;
cr_surf = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3 * BUBBLE_SHADOW_SIZE,
3 * BUBBLE_SHADOW_SIZE);
status = cairo_surface_status (cr_surf);
if (status != CAIRO_STATUS_SUCCESS)
g_print ("Error: \"%s\"\n", cairo_status_to_string (status));
cr = cairo_create (cr_surf);
status = cairo_status (cr);
if (status != CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy (cr_surf);
g_print ("Error: \"%s\"\n", cairo_status_to_string (status));
}
// clear and render drop-shadow and bubble-background
cairo_scale (cr, 1.0f, 1.0f);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
if (g_composited)
{
draw_shadow (cr,
width,
height,
BUBBLE_SHADOW_SIZE,
CORNER_RADIUS);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
draw_round_rect (cr,
1.0f,
(gdouble) BUBBLE_SHADOW_SIZE,
(gdouble) BUBBLE_SHADOW_SIZE,
(gdouble) CORNER_RADIUS,
(gdouble) (width - 2.0f * BUBBLE_SHADOW_SIZE),
(gdouble) (height - 2.0f* BUBBLE_SHADOW_SIZE));
cairo_fill (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba (cr,
BUBBLE_BG_COLOR_R,
BUBBLE_BG_COLOR_G,
BUBBLE_BG_COLOR_B,
0.95f);
}
else
cairo_set_source_rgb (cr,
BUBBLE_BG_COLOR_R,
BUBBLE_BG_COLOR_G,
BUBBLE_BG_COLOR_B);
draw_round_rect (cr,
1.0f,
BUBBLE_SHADOW_SIZE,
BUBBLE_SHADOW_SIZE,
CORNER_RADIUS,
(gdouble) (width - 2.0f * BUBBLE_SHADOW_SIZE),
(gdouble) (height - 2.0f * BUBBLE_SHADOW_SIZE));
cairo_fill (cr);
tmp = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (cr_surf),
cairo_image_surface_get_format (cr_surf),
3 * BUBBLE_SHADOW_SIZE,
3 * BUBBLE_SHADOW_SIZE,
cairo_image_surface_get_stride (cr_surf));
dummy_surf = copy_surface (tmp);
cairo_surface_destroy (tmp);
tmp = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (dummy_surf),
cairo_image_surface_get_format (dummy_surf),
2 * BUBBLE_SHADOW_SIZE,
2 * BUBBLE_SHADOW_SIZE,
cairo_image_surface_get_stride (dummy_surf));
norm_surf = copy_surface (tmp);
cairo_surface_destroy (tmp);
blur = raico_blur_create (RAICO_BLUR_QUALITY_LOW);
raico_blur_set_radius (blur, 6);
raico_blur_apply (blur, dummy_surf);
raico_blur_destroy (blur);
tmp = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (dummy_surf),
cairo_image_surface_get_format (dummy_surf),
2 * BUBBLE_SHADOW_SIZE,
2 * BUBBLE_SHADOW_SIZE,
cairo_image_surface_get_stride (dummy_surf));
blur_surf = copy_surface (tmp);
cairo_surface_destroy (tmp);
cairo_surface_destroy (dummy_surf);
g_tile = tile_new_for_padding (norm_surf, blur_surf);
cairo_surface_destroy (norm_surf);
cairo_surface_destroy (blur_surf);
cairo_surface_destroy (cr_surf);
cairo_destroy (cr);
}
void
setup_tile (gint w, gint h)
{
cairo_status_t status;
cairo_t* cr = NULL;
cairo_surface_t* cr_surf = NULL;
gdouble width = (gdouble) w;
gdouble height = (gdouble) h;
cairo_surface_t* tmp = NULL;
cairo_surface_t* dummy_surf = NULL;
cairo_surface_t* norm_surf = NULL;
cairo_surface_t* blur_surf = NULL;
raico_blur_t* blur = NULL;
tile_t* tile = NULL;
// create tmp. surface for scratch
cr_surf = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
3 * BUBBLE_SHADOW_SIZE,
3 * BUBBLE_SHADOW_SIZE);
status = cairo_surface_status (cr_surf);
if (status != CAIRO_STATUS_SUCCESS)
g_print ("Error: \"%s\"\n", cairo_status_to_string (status));
// create context for that tmp. scratch surface
cr = cairo_create (cr_surf);
status = cairo_status (cr);
if (status != CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy (cr_surf);
g_print ("Error: \"%s\"\n", cairo_status_to_string (status));
}
// clear, render drop-shadow and bubble-background in scratch-surface
cairo_scale (cr, 1.0f, 1.0f);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
if (g_composited)
{
draw_shadow (cr,
width,
height,
BUBBLE_SHADOW_SIZE,
CORNER_RADIUS);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
draw_round_rect (cr,
1.0f,
(gdouble) BUBBLE_SHADOW_SIZE,
(gdouble) BUBBLE_SHADOW_SIZE,
(gdouble) CORNER_RADIUS,
(gdouble) (width - 2.0f * BUBBLE_SHADOW_SIZE),
(gdouble) (height - 2.0f* BUBBLE_SHADOW_SIZE));
cairo_fill (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba (cr,
BUBBLE_BG_COLOR_R,
BUBBLE_BG_COLOR_G,
BUBBLE_BG_COLOR_B,
0.95f);
}
else
cairo_set_source_rgb (cr,
BUBBLE_BG_COLOR_R,
BUBBLE_BG_COLOR_G,
BUBBLE_BG_COLOR_B);
draw_round_rect (cr,
1.0f,
BUBBLE_SHADOW_SIZE,
BUBBLE_SHADOW_SIZE,
CORNER_RADIUS,
(gdouble) (width - 2.0f * BUBBLE_SHADOW_SIZE),
(gdouble) (height - 2.0f * BUBBLE_SHADOW_SIZE));
cairo_fill (cr);
// create tmp. copy of scratch-surface
tmp = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (cr_surf),
cairo_image_surface_get_format (cr_surf),
3 * BUBBLE_SHADOW_SIZE,
3 * BUBBLE_SHADOW_SIZE,
cairo_image_surface_get_stride (cr_surf));
dummy_surf = copy_surface (tmp);
cairo_surface_destroy (tmp);
// create normal-state surface for tile from copy of scratch-surface
tmp = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (dummy_surf),
cairo_image_surface_get_format (dummy_surf),
2 * BUBBLE_SHADOW_SIZE,
2 * BUBBLE_SHADOW_SIZE,
cairo_image_surface_get_stride (dummy_surf));
norm_surf = copy_surface (tmp);
cairo_surface_destroy (tmp);
// blur tmp. copy of scratch-surface
blur = raico_blur_create (RAICO_BLUR_QUALITY_LOW);
raico_blur_set_radius (blur, 6);
raico_blur_apply (blur, dummy_surf);
raico_blur_destroy (blur);
// create blurred-state surface for tile
tmp = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (dummy_surf),
cairo_image_surface_get_format (dummy_surf),
2 * BUBBLE_SHADOW_SIZE,
2 * BUBBLE_SHADOW_SIZE,
cairo_image_surface_get_stride (dummy_surf));
blur_surf = copy_surface (tmp);
cairo_surface_destroy (tmp);
// actually create the tile with padding in mind
tile = tile_new_for_padding (norm_surf, blur_surf);
destroy_cloned_surface (norm_surf);
destroy_cloned_surface (blur_surf);
destroy_cloned_surface (dummy_surf);
cairo_destroy (cr);
cairo_surface_destroy (cr_surf);
norm_surf = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h);
cr = cairo_create (norm_surf);
cairo_scale (cr, 1.0f, 1.0f);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
tile_paint_with_padding (tile, cr, 0.0f, 0.0f, w, h, 1.0f, 0.0f);
cairo_destroy (cr);
blur_surf = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, w, h);
cr = cairo_create (blur_surf);
cairo_scale (cr, 1.0f, 1.0f);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
tile_paint_with_padding (tile, cr, 0.0f, 0.0f, w, h, 0.0f, 1.0f);
cairo_destroy (cr);
g_tile = tile_new_for_padding (norm_surf, blur_surf);
// clean up
tile_destroy (tile);
cairo_surface_destroy (norm_surf);
cairo_surface_destroy (blur_surf);
}
void
draw_shadow (cairo_t* cr,
gdouble width,
gdouble height,
gint shadow_radius,
gint corner_radius)
{
cairo_surface_t* tmp_surface = NULL;
cairo_surface_t* new_surface = NULL;
cairo_pattern_t* pattern = NULL;
cairo_t* cr_surf = NULL;
cairo_matrix_t matrix;
raico_blur_t* blur = NULL;
tmp_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
4 * shadow_radius,
4 * shadow_radius);
if (cairo_surface_status (tmp_surface) != CAIRO_STATUS_SUCCESS)
return;
cr_surf = cairo_create (tmp_surface);
if (cairo_status (cr_surf) != CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy (tmp_surface);
return;
}
cairo_scale (cr_surf, 1.0f, 1.0f);
cairo_set_operator (cr_surf, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr_surf);
cairo_set_operator (cr_surf, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba (cr_surf, 0.0f, 0.0f, 0.0f, 0.75f);
cairo_arc (cr_surf,
2 * shadow_radius,
2 * shadow_radius,
2.0f * corner_radius,
0.0f,
360.0f * (G_PI / 180.f));
cairo_fill (cr_surf);
cairo_destroy (cr_surf);
// create and setup blur
blur = raico_blur_create (RAICO_BLUR_QUALITY_LOW);
raico_blur_set_radius (blur, shadow_radius);
// now blur it
raico_blur_apply (blur, tmp_surface);
// blur no longer needed
raico_blur_destroy (blur);
new_surface = cairo_image_surface_create_for_data (
cairo_image_surface_get_data (tmp_surface),
cairo_image_surface_get_format (tmp_surface),
cairo_image_surface_get_width (tmp_surface) / 2,
cairo_image_surface_get_height (tmp_surface) / 2,
cairo_image_surface_get_stride (tmp_surface));
pattern = cairo_pattern_create_for_surface (new_surface);
if (cairo_pattern_status (pattern) != CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy (tmp_surface);
cairo_surface_destroy (new_surface);
return;
}
// top left
cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD);
cairo_set_source (cr, pattern);
cairo_rectangle (cr,
0.0f,
0.0f,
width - 2 * shadow_radius,
2 * shadow_radius);
cairo_fill (cr);
// bottom left
cairo_matrix_init_scale (&matrix, 1.0f, -1.0f);
cairo_matrix_translate (&matrix, 0.0f, -height);
cairo_pattern_set_matrix (pattern, &matrix);
cairo_rectangle (cr,
0.0f,
2 * shadow_radius,
2 * shadow_radius,
height - 2 * shadow_radius);
cairo_fill (cr);
// top right
cairo_matrix_init_scale (&matrix, -1.0f, 1.0f);
cairo_matrix_translate (&matrix, -width, 0.0f);
cairo_pattern_set_matrix (pattern, &matrix);
cairo_rectangle (cr,
width - 2 * shadow_radius,
0.0f,
2 * shadow_radius,
height - 2 * shadow_radius);
cairo_fill (cr);
// bottom right
cairo_matrix_init_scale (&matrix, -1.0f, -1.0f);
cairo_matrix_translate (&matrix, -width, -height);
cairo_pattern_set_matrix (pattern, &matrix);
cairo_rectangle (cr,
2 * shadow_radius,
height - 2 * shadow_radius,
width - 2 * shadow_radius,
2 * shadow_radius);
cairo_fill (cr);
// clean up
cairo_pattern_destroy (pattern);
cairo_surface_destroy (tmp_surface);
cairo_surface_destroy (new_surface);
}
tile_t*
setup_text_tile (const cairo_font_options_t* font_opts,
gdouble dpi,
gint w,
gint h)
{
tile_t* tile = NULL;
cairo_status_t status;
cairo_surface_t* surface = NULL;
cairo_surface_t* text = NULL;
cairo_surface_t* shadow = NULL;
cairo_t* cr;
gdouble width = (gdouble) w;
gdouble height = (gdouble) h;
raico_blur_t* blur = NULL;
cairo_pattern_t* pattern = NULL;
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
status = cairo_surface_status (surface);
if (status != CAIRO_STATUS_SUCCESS)
g_print ("Error: \"%s\"\n", cairo_status_to_string (status));
cr = cairo_create (surface);
status = cairo_status (cr);
if (status != CAIRO_STATUS_SUCCESS)
{
cairo_surface_destroy (surface);
g_print ("Error: \"%s\"\n", cairo_status_to_string (status));
}
// clear and render drop-shadow and bubble-background
cairo_scale (cr, 1.0f, 1.0f);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
text = render_text_to_surface (
"After an evening of hacking at the"
" Fataga hotel here at GUADEC I "
"can present you even text-scroll "
"with blur-cache and fade-out mask"
" and I dedicate this to Behdad who"
" sadly burst his upper lip during "
"the evening and had to go to the "
"hospital. Some spanish KDE-folks "
"kindly accompanied him to help out"
" with translation. True collaboration!\0",
width,
height,
font_opts,
dpi);
shadow = render_text_to_surface (
"After an evening of hacking at the"
" Fataga hotel here at GUADEC I "
"can present you even text-scroll "
"with blur-cache and fade-out mask"
" and I dedicate this to Behdad who"
" sadly burst his upper lip during "
"the evening and had to go to the "
"hospital. Some spanish KDE-folks "
"kindly accompanied him to help out"
" with translation. True collaboration!\0",
width,
height,
font_opts,
dpi);
// create and setup blur
blur = raico_blur_create (RAICO_BLUR_QUALITY_LOW);
raico_blur_set_radius (blur, 4);
// now blur it
raico_blur_apply (blur, shadow);
// blur no longer needed
raico_blur_destroy (blur);
cairo_push_group (cr);
cairo_set_source_surface (cr,
shadow,
0.0f,
0.0f);
cairo_paint (cr);
pattern = cairo_pop_group (cr);
cairo_set_source_rgba (cr, 0.0f, 0.0f, 0.0f, 1.0f);
cairo_mask (cr, pattern);
cairo_surface_destroy (shadow);
cairo_pattern_destroy (pattern);
cairo_set_source_surface (cr, text, 0.0f, 0.0f);
cairo_paint (cr);
cairo_destroy (cr);
cairo_surface_destroy (text);
tile = tile_new (surface, 6);
cairo_surface_destroy (surface);
return tile;
}
