diff options
Diffstat (limited to 'src/play-button.c')
| -rw-r--r-- | src/play-button.c | 402 |
1 files changed, 390 insertions, 12 deletions
diff --git a/src/play-button.c b/src/play-button.c index 76a8109..347a0bc 100644 --- a/src/play-button.c +++ b/src/play-button.c @@ -15,6 +15,8 @@ PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. + +Uses code from ctk */ #ifdef HAVE_CONFIG_H @@ -58,6 +60,227 @@ static void play_button_draw_previous_symbol(cairo_t* cr, double x, double y); G_DEFINE_TYPE (PlayButton, play_button, GTK_TYPE_DRAWING_AREA); +/// internal helper functions ////////////////////////////////////////////////// + +static double +_align (double val) +{ + double fract = val - (int) val; + + if (fract != 0.5f) + return (double) ((int) val + 0.5f); + else + return val; +} + +static inline void +_blurinner (guchar* pixel, + gint* zR, + gint* zG, + gint* zB, + gint* zA, + gint alpha, + gint aprec, + gint zprec) +{ + gint R; + gint G; + gint B; + guchar A; + + R = *pixel; + G = *(pixel + 1); + B = *(pixel + 2); + A = *(pixel + 3); + + *zR += (alpha * ((R << zprec) - *zR)) >> aprec; + *zG += (alpha * ((G << zprec) - *zG)) >> aprec; + *zB += (alpha * ((B << zprec) - *zB)) >> aprec; + *zA += (alpha * ((A << zprec) - *zA)) >> aprec; + + *pixel = *zR >> zprec; + *(pixel + 1) = *zG >> zprec; + *(pixel + 2) = *zB >> zprec; + *(pixel + 3) = *zA >> zprec; +} + +static inline void +_blurrow (guchar* pixels, + gint width, + gint height, + gint channels, + gint line, + gint alpha, + gint aprec, + gint zprec) +{ + gint zR; + gint zG; + gint zB; + gint zA; + gint index; + guchar* scanline; + + scanline = &(pixels[line * width * channels]); + + zR = *scanline << zprec; + zG = *(scanline + 1) << zprec; + zB = *(scanline + 2) << zprec; + zA = *(scanline + 3) << zprec; + + for (index = 0; index < width; index ++) + _blurinner (&scanline[index * channels], + &zR, + &zG, + &zB, + &zA, + alpha, + aprec, + zprec); + + for (index = width - 2; index >= 0; index--) + _blurinner (&scanline[index * channels], + &zR, + &zG, + &zB, + &zA, + alpha, + aprec, + zprec); +} + +static inline void +_blurcol (guchar* pixels, + gint width, + gint height, + gint channels, + gint x, + gint alpha, + gint aprec, + gint zprec) +{ + gint zR; + gint zG; + gint zB; + gint zA; + gint index; + guchar* ptr; + + ptr = pixels; + + ptr += x * channels; + + zR = *((guchar*) ptr ) << zprec; + zG = *((guchar*) ptr + 1) << zprec; + zB = *((guchar*) ptr + 2) << zprec; + zA = *((guchar*) ptr + 3) << zprec; + + for (index = width; index < (height - 1) * width; index += width) + _blurinner ((guchar*) &ptr[index * channels], + &zR, + &zG, + &zB, + &zA, + alpha, + aprec, + zprec); + + for (index = (height - 2) * width; index >= 0; index -= width) + _blurinner ((guchar*) &ptr[index * channels], + &zR, + &zG, + &zB, + &zA, + alpha, + aprec, + zprec); +} + +void +_expblur (guchar* pixels, + gint width, + gint height, + gint channels, + gint radius, + gint aprec, + gint zprec) +{ + gint alpha; + gint row = 0; + gint col = 0; + + if (radius < 1) + return; + + // calculate the alpha such that 90% of + // the kernel is within the radius. + // (Kernel extends to infinity) + alpha = (gint) ((1 << aprec) * (1.0f - expf (-2.3f / (radius + 1.f)))); + + for (; row < height; row++) + _blurrow (pixels, + width, + height, + channels, + row, + alpha, + aprec, + zprec); + + for(; col < width; col++) + _blurcol (pixels, + width, + height, + channels, + col, + alpha, + aprec, + zprec); + + return; +} + +void +_surface_blur (cairo_surface_t* surface, + guint radius) +{ + guchar* pixels; + guint width; + guint height; + cairo_format_t format; + + // before we mess with the surface execute any pending drawing + cairo_surface_flush (surface); + + pixels = cairo_image_surface_get_data (surface); + width = cairo_image_surface_get_width (surface); + height = cairo_image_surface_get_height (surface); + format = cairo_image_surface_get_format (surface); + + switch (format) + { + case CAIRO_FORMAT_ARGB32: + _expblur (pixels, width, height, 4, radius, 16, 7); + break; + + case CAIRO_FORMAT_RGB24: + _expblur (pixels, width, height, 3, radius, 16, 7); + break; + + case CAIRO_FORMAT_A8: + _expblur (pixels, width, height, 1, radius, 16, 7); + break; + + default : + // do nothing + break; + } + + // inform cairo we altered the surfaces contents + cairo_surface_mark_dirty (surface); +} + +/// GObject functions ////////////////////////////////////////////////////////// static void play_button_class_init (PlayButtonClass *klass) @@ -97,7 +320,7 @@ static gboolean play_button_expose (GtkWidget *button, GdkEventExpose *event) { cairo_t *cr; - cr = gdk_cairo_create (button->window); + cr = gdk_cairo_create (button->window); g_debug("PlayButton::Draw - width = %i", button->allocation.width); g_debug("PlayButton::Draw - event->area.width = %i", event->area.width); @@ -109,7 +332,7 @@ play_button_expose (GtkWidget *button, GdkEventExpose *event) cairo_clip(cr); draw (button, cr); - cairo_destroy (cr); + cairo_destroy (cr); return FALSE; } @@ -126,34 +349,189 @@ play_button_set_style(GtkWidget* button, GtkStyle* style) } static void -draw (GtkWidget* button, cairo_t *cr) +draw_gradient (cairo_t* cr, + double x, + double y, + double w, + double r, + double* rgba_start, + double* rgba_end) { + cairo_pattern_t* pattern = NULL; + cairo_move_to (cr, x, y); + cairo_line_to (cr, x + w - 2.0f * r, y); + cairo_arc (cr, + x + w - 2.0f * r, + y + r, + r, + -90.0f * G_PI / 180.0f, + 90.0f * G_PI / 180.0f); + cairo_line_to (cr, x, y + 2.0f * r); + cairo_arc (cr, + x, + y + r, + r, + 90.0f * G_PI / 180.0f, + 270.0f * G_PI / 180.0f); + cairo_close_path (cr); + + pattern = cairo_pattern_create_linear (x, y, x, y + 2.0f * r); + cairo_pattern_add_color_stop_rgba (pattern, + 0.0f, + rgba_start[0], + rgba_start[1], + rgba_start[2], + rgba_start[3]); + cairo_pattern_add_color_stop_rgba (pattern, + 1.0f, + rgba_end[0], + rgba_end[1], + rgba_end[2], + rgba_end[3]); + cairo_set_source (cr, pattern); + cairo_fill (cr); + cairo_pattern_destroy (pattern); +} + +static void +draw_circle (cairo_t* cr, + double x, + double y, + double r, + double* rgba_start, + double* rgba_end) +{ + cairo_pattern_t* pattern = NULL; + + cairo_move_to (cr, x, y); + cairo_arc (cr, + x + r, + y + r, + r, + 0.0f * G_PI / 180.0f, + 360.0f * G_PI / 180.0f); + + pattern = cairo_pattern_create_linear (x, y, x, y + 2.0f * r); + cairo_pattern_add_color_stop_rgba (pattern, + 0.0f, + rgba_start[0], + rgba_start[1], + rgba_start[2], + rgba_start[3]); + cairo_pattern_add_color_stop_rgba (pattern, + 1.0f, + rgba_end[0], + rgba_end[1], + rgba_end[2], + rgba_end[3]); + cairo_set_source (cr, pattern); + cairo_fill (cr); + cairo_pattern_destroy (pattern); +} + +static void +draw (GtkWidget* button, cairo_t *cr) +{ //PlayButtonPrivate* priv = PLAY_BUTTON_GET_PRIVATE(button); - double rect_width = 115; - double rect_height = 28; - double p_radius = 21; + double rect_width = 130; double y = 15; double x = 22; + double inner_height = 25.0f; + double inner_radius = 12.5f; + double inner_start[] = {229.0f / 255.0f, + 223.0f / 255.0f, + 215.0f / 255.0f, + 1.0f}; + double inner_end[] = {183.0f / 255.0f, + 178.0f / 255.0f, + 172.0f / 255.0f, + 1.0f}; + double middle_height = 27.0f; + double middle_radius = 13.5f; + double middle_start[] = {61.0f / 255.0f, + 60.0f / 255.0f, + 57.0f / 255.0f, + 1.0f}; + double middle_end[] = {94.0f / 255.0f, + 93.0f / 255.0f, + 90.0f / 255.0f, + 1.0f}; + double outter_height = 29.0f; + double outter_radius = 14.5f; + double outter_start[] = {36.0f / 255.0f, + 35.0f / 255.0f, + 33.0f / 255.0f, + 1.0f}; + double outter_end[] = {123.0f / 255.0f, + 123.0f / 255.0f, + 120.0f / 255.0f, + 1.0f}; + + double circle_radius = 19.0f; + //double radius=35; //double x= button->allocation.width/2 - rect_width/2; //double y= button->allocation.height/2 -rect_height/2; + // ffwd/back-background + draw_gradient (cr, + x, + y, + rect_width, + outter_radius, + outter_start, + outter_end); + draw_gradient (cr, + x, + y + 1, + rect_width - 2, + middle_radius, + middle_start, + middle_end); + draw_gradient (cr, + x, + y + 2, + rect_width - 4, + inner_radius, + inner_start, + inner_end); + + // play/pause-background + draw_circle (cr, + x + rect_width / 2.0f - 2.0f * outter_radius - 4.5f, + y - ((circle_radius - outter_radius)), + circle_radius, + outter_start, + outter_end); + draw_circle (cr, + x + rect_width / 2.0f - 2.0f * outter_radius - 4.5f + 1.0f, + y - ((circle_radius - outter_radius)) + 1.0f, + circle_radius - 1, + middle_start, + middle_end); + draw_circle (cr, + x + rect_width / 2.0f - 2.0f * outter_radius - 4.5f + 2.0f, + y - ((circle_radius - outter_radius)) + 2.0f, + circle_radius - 2.0f, + inner_start, + inner_end); + // Draw the outside drop shadow background - play_button_draw_background_shadow_1(button, cr, x, y, rect_width, rect_height, p_radius); + //play_button_draw_background_shadow_1(button, cr, x, y, rect_width, rect_height, p_radius); // Draw the inside drop shadow background - gint offset = 4; - play_button_draw_background_shadow_2(button, cr, x + offset-1, y + offset/2, rect_width-offset, rect_height-offset, p_radius-(offset/2)); + /*gint offset = 4; + play_button_draw_background_shadow_2(button, cr, x + offset-1, y + offset/2, rect_width-offset, rect_height-offset, p_radius-(offset/2));*/ - offset = 5; + //offset = 5; // Draw the inside actual background - play_button_draw_background(button, cr, x+offset-1, y + offset/2+1, rect_width-offset, rect_height-offset, p_radius-offset/2); + /*play_button_draw_background(button, cr, x+offset-1, y + offset/2+1, rect_width-offset, rect_height-offset, p_radius-offset/2); play_button_draw_pause_symbol(cr, rect_width/2 + rect_height/10 + x -1 + offset/2, rect_height/5 +y ); play_button_draw_pause_symbol(cr, rect_width/2 + rect_height/10 + x + offset/2 + 10, rect_height/5 +y ); - play_button_draw_previous_symbol(cr, x+rect_height/2 + offset, y + offset+2); + play_button_draw_previous_symbol(cr, x+rect_height/2 + offset, y + offset+2);*/ cairo_surface_write_to_png(cairo_get_target (cr), "/tmp/foobar.png"); } |