diff options
Diffstat (limited to 'eel/eel-graphic-effects.c')
| -rw-r--r-- | eel/eel-graphic-effects.c | 206 |
1 files changed, 106 insertions, 100 deletions
diff --git a/eel/eel-graphic-effects.c b/eel/eel-graphic-effects.c index 820435ab7..b3fdc5bdb 100644 --- a/eel/eel-graphic-effects.c +++ b/eel/eel-graphic-effects.c @@ -1,4 +1,3 @@ - /* Eel - pixbuf manipulation routines for graphical effects. * * Copyright (C) 2000 Eazel, Inc @@ -20,7 +19,7 @@ */ /* This file contains pixbuf manipulation routines used for graphical effects like pre-lighting - and selection hilighting */ + * and selection hilighting */ #include <config.h> @@ -35,17 +34,17 @@ static GdkPixbuf * create_new_pixbuf (GdkPixbuf *src) { - g_assert (gdk_pixbuf_get_colorspace (src) == GDK_COLORSPACE_RGB); - g_assert ((!gdk_pixbuf_get_has_alpha (src) - && gdk_pixbuf_get_n_channels (src) == 3) - || (gdk_pixbuf_get_has_alpha (src) - && gdk_pixbuf_get_n_channels (src) == 4)); - - return gdk_pixbuf_new (gdk_pixbuf_get_colorspace (src), - gdk_pixbuf_get_has_alpha (src), - gdk_pixbuf_get_bits_per_sample (src), - gdk_pixbuf_get_width (src), - gdk_pixbuf_get_height (src)); + g_assert (gdk_pixbuf_get_colorspace (src) == GDK_COLORSPACE_RGB); + g_assert ((!gdk_pixbuf_get_has_alpha (src) + && gdk_pixbuf_get_n_channels (src) == 3) + || (gdk_pixbuf_get_has_alpha (src) + && gdk_pixbuf_get_n_channels (src) == 4)); + + return gdk_pixbuf_new (gdk_pixbuf_get_colorspace (src), + gdk_pixbuf_get_has_alpha (src), + gdk_pixbuf_get_bits_per_sample (src), + gdk_pixbuf_get_width (src), + gdk_pixbuf_get_height (src)); } /* utility routine to bump the level of a color component with pinning */ @@ -53,102 +52,109 @@ create_new_pixbuf (GdkPixbuf *src) static guchar lighten_component (guchar cur_value) { - int new_value = cur_value; - new_value += 24 + (new_value >> 3); - if (new_value > 255) { - new_value = 255; - } - return (guchar) new_value; + int new_value = cur_value; + new_value += 24 + (new_value >> 3); + if (new_value > 255) + { + new_value = 255; + } + return (guchar) new_value; } GdkPixbuf * -eel_create_spotlight_pixbuf (GdkPixbuf* src) +eel_create_spotlight_pixbuf (GdkPixbuf *src) { - GdkPixbuf *dest; - int i, j; - int width, height, has_alpha, src_row_stride, dst_row_stride; - guchar *target_pixels, *original_pixels; - guchar *pixsrc, *pixdest; - - g_return_val_if_fail (gdk_pixbuf_get_colorspace (src) == GDK_COLORSPACE_RGB, NULL); - g_return_val_if_fail ((!gdk_pixbuf_get_has_alpha (src) - && gdk_pixbuf_get_n_channels (src) == 3) - || (gdk_pixbuf_get_has_alpha (src) - && gdk_pixbuf_get_n_channels (src) == 4), NULL); - g_return_val_if_fail (gdk_pixbuf_get_bits_per_sample (src) == 8, NULL); - - dest = create_new_pixbuf (src); - - has_alpha = gdk_pixbuf_get_has_alpha (src); - width = gdk_pixbuf_get_width (src); - height = gdk_pixbuf_get_height (src); - dst_row_stride = gdk_pixbuf_get_rowstride (dest); - src_row_stride = gdk_pixbuf_get_rowstride (src); - target_pixels = gdk_pixbuf_get_pixels (dest); - original_pixels = gdk_pixbuf_get_pixels (src); - - for (i = 0; i < height; i++) { - pixdest = target_pixels + i * dst_row_stride; - pixsrc = original_pixels + i * src_row_stride; - for (j = 0; j < width; j++) { - *pixdest++ = lighten_component (*pixsrc++); - *pixdest++ = lighten_component (*pixsrc++); - *pixdest++ = lighten_component (*pixsrc++); - if (has_alpha) { - *pixdest++ = *pixsrc++; - } - } - } - return dest; + GdkPixbuf *dest; + int i, j; + int width, height, has_alpha, src_row_stride, dst_row_stride; + guchar *target_pixels, *original_pixels; + guchar *pixsrc, *pixdest; + + g_return_val_if_fail (gdk_pixbuf_get_colorspace (src) == GDK_COLORSPACE_RGB, NULL); + g_return_val_if_fail ((!gdk_pixbuf_get_has_alpha (src) + && gdk_pixbuf_get_n_channels (src) == 3) + || (gdk_pixbuf_get_has_alpha (src) + && gdk_pixbuf_get_n_channels (src) == 4), NULL); + g_return_val_if_fail (gdk_pixbuf_get_bits_per_sample (src) == 8, NULL); + + dest = create_new_pixbuf (src); + + has_alpha = gdk_pixbuf_get_has_alpha (src); + width = gdk_pixbuf_get_width (src); + height = gdk_pixbuf_get_height (src); + dst_row_stride = gdk_pixbuf_get_rowstride (dest); + src_row_stride = gdk_pixbuf_get_rowstride (src); + target_pixels = gdk_pixbuf_get_pixels (dest); + original_pixels = gdk_pixbuf_get_pixels (src); + + for (i = 0; i < height; i++) + { + pixdest = target_pixels + i * dst_row_stride; + pixsrc = original_pixels + i * src_row_stride; + for (j = 0; j < width; j++) + { + *pixdest++ = lighten_component (*pixsrc++); + *pixdest++ = lighten_component (*pixsrc++); + *pixdest++ = lighten_component (*pixsrc++); + if (has_alpha) + { + *pixdest++ = *pixsrc++; + } + } + } + return dest; } /* this routine colorizes the passed-in pixbuf by multiplying each pixel with the passed in color */ GdkPixbuf * eel_create_colorized_pixbuf (GdkPixbuf *src, - GdkRGBA *color) + GdkRGBA *color) { - int i, j; - int width, height, has_alpha, src_row_stride, dst_row_stride; - guchar *target_pixels; - guchar *original_pixels; - guchar *pixsrc; - guchar *pixdest; - GdkPixbuf *dest; - gint red_value, green_value, blue_value; - - g_return_val_if_fail (gdk_pixbuf_get_colorspace (src) == GDK_COLORSPACE_RGB, NULL); - g_return_val_if_fail ((!gdk_pixbuf_get_has_alpha (src) - && gdk_pixbuf_get_n_channels (src) == 3) - || (gdk_pixbuf_get_has_alpha (src) - && gdk_pixbuf_get_n_channels (src) == 4), NULL); - g_return_val_if_fail (gdk_pixbuf_get_bits_per_sample (src) == 8, NULL); - - red_value = (gint) floor (color->red * 255); - green_value = (gint) floor (color->green * 255); - blue_value = (gint) floor (color->blue * 255); - - dest = create_new_pixbuf (src); - - has_alpha = gdk_pixbuf_get_has_alpha (src); - width = gdk_pixbuf_get_width (src); - height = gdk_pixbuf_get_height (src); - src_row_stride = gdk_pixbuf_get_rowstride (src); - dst_row_stride = gdk_pixbuf_get_rowstride (dest); - target_pixels = gdk_pixbuf_get_pixels (dest); - original_pixels = gdk_pixbuf_get_pixels (src); - - for (i = 0; i < height; i++) { - pixdest = target_pixels + i*dst_row_stride; - pixsrc = original_pixels + i*src_row_stride; - for (j = 0; j < width; j++) { - *pixdest++ = (*pixsrc++ * red_value) >> 8; - *pixdest++ = (*pixsrc++ * green_value) >> 8; - *pixdest++ = (*pixsrc++ * blue_value) >> 8; - if (has_alpha) { - *pixdest++ = *pixsrc++; - } - } - } - return dest; + int i, j; + int width, height, has_alpha, src_row_stride, dst_row_stride; + guchar *target_pixels; + guchar *original_pixels; + guchar *pixsrc; + guchar *pixdest; + GdkPixbuf *dest; + gint red_value, green_value, blue_value; + + g_return_val_if_fail (gdk_pixbuf_get_colorspace (src) == GDK_COLORSPACE_RGB, NULL); + g_return_val_if_fail ((!gdk_pixbuf_get_has_alpha (src) + && gdk_pixbuf_get_n_channels (src) == 3) + || (gdk_pixbuf_get_has_alpha (src) + && gdk_pixbuf_get_n_channels (src) == 4), NULL); + g_return_val_if_fail (gdk_pixbuf_get_bits_per_sample (src) == 8, NULL); + + red_value = (gint) floor (color->red * 255); + green_value = (gint) floor (color->green * 255); + blue_value = (gint) floor (color->blue * 255); + + dest = create_new_pixbuf (src); + + has_alpha = gdk_pixbuf_get_has_alpha (src); + width = gdk_pixbuf_get_width (src); + height = gdk_pixbuf_get_height (src); + src_row_stride = gdk_pixbuf_get_rowstride (src); + dst_row_stride = gdk_pixbuf_get_rowstride (dest); + target_pixels = gdk_pixbuf_get_pixels (dest); + original_pixels = gdk_pixbuf_get_pixels (src); + + for (i = 0; i < height; i++) + { + pixdest = target_pixels + i * dst_row_stride; + pixsrc = original_pixels + i * src_row_stride; + for (j = 0; j < width; j++) + { + *pixdest++ = (*pixsrc++ *red_value) >> 8; + *pixdest++ = (*pixsrc++ *green_value) >> 8; + *pixdest++ = (*pixsrc++ *blue_value) >> 8; + if (has_alpha) + { + *pixdest++ = *pixsrc++; + } + } + } + return dest; } |