/*
- * GQview
+ * Geeqie
* (C) 2004 John Ellis
+ * Copyright (C) 2008 - 2012 The Geeqie Team
*
* Author: John Ellis
*
*/
-#include "gqview.h"
+#include "main.h"
#include "pixbuf_util.h"
+#include "exif.h"
+#include "ui_fileops.h"
#include "icons/icons_inline.h"
+#include <math.h>
+
/*
*-----------------------------------------------------------------------------
*-----------------------------------------------------------------------------
*/
-gboolean pixbuf_to_file_as_png (GdkPixbuf *pixbuf, const char *filename)
+gboolean pixbuf_to_file_as_png(GdkPixbuf *pixbuf, const gchar *filename)
{
GError *error = NULL;
- gint ret;
+ gboolean ret;
if (!pixbuf || !filename) return FALSE;
ret = gdk_pixbuf_save(pixbuf, filename, "png", &error,
- "tEXt::Software", "GQview "VERSION, NULL);
+ "tEXt::Software", GQ_APPNAME " " VERSION, NULL);
if (error)
{
- printf("Error saving png file: %s\n", error->message);
+ log_printf("Error saving png file: %s\n", error->message);
g_error_free(error);
}
if (quality == -1) quality = 75;
if (quality < 1 || quality > 100)
{
- printf("Jpeg not saved, invalid quality %d\n", quality);
+ log_printf("Jpeg not saved, invalid quality %d\n", quality);
return FALSE;
}
if (error)
{
- printf("Error saving jpeg to %s\n%s\n", filename, error->message);
+ log_printf("Error saving jpeg to %s\n%s\n", filename, error->message);
g_error_free(error);
}
{ PIXBUF_INLINE_FOLDER_UP, folder_up },
{ PIXBUF_INLINE_SCROLLER, icon_scroller },
{ PIXBUF_INLINE_BROKEN, icon_broken },
- { PIXBUF_INLINE_LOGO, gqview_logo },
+ { PIXBUF_INLINE_ICON, gqview_icon },
+ { PIXBUF_INLINE_LOGO, geeqie_logo },
+ { PIXBUF_INLINE_ICON_FLOAT, icon_float },
+ { PIXBUF_INLINE_ICON_THUMB, icon_thumb },
+ { PIXBUF_INLINE_ICON_BOOK, icon_book },
+ { PIXBUF_INLINE_ICON_CONFIG, icon_config },
+ { PIXBUF_INLINE_ICON_TOOLS, icon_tools },
+ { PIXBUF_INLINE_ICON_VIEW, icon_view },
{ NULL, NULL }
};
i++;
}
- printf("warning: inline pixbuf key \"%s\" not found.\n", key);
+ log_printf("warning: inline pixbuf key \"%s\" not found.\n", key);
return NULL;
}
+static void register_stock_icon(const gchar *key, GdkPixbuf *pixbuf)
+{
+ static GtkIconFactory *icon_factory = NULL;
+ GtkIconSet *icon_set;
+
+ if (!icon_factory)
+ {
+ icon_factory = gtk_icon_factory_new();
+ gtk_icon_factory_add_default(icon_factory);
+ }
+
+ icon_set = gtk_icon_set_new_from_pixbuf(pixbuf);
+ gtk_icon_factory_add(icon_factory, key, icon_set);
+}
+
+
+void pixbuf_inline_register_stock_icons(void)
+{
+ gint i;
+
+ i = 0;
+ while (inline_pixbuf_data[i].key)
+ {
+ register_stock_icon(inline_pixbuf_data[i].key, pixbuf_inline(inline_pixbuf_data[i].key));
+ i++;
+ }
+}
+
+gboolean register_theme_icon_as_stock(const gchar *key, const gchar *icon)
+{
+ GtkIconTheme *icon_theme;
+ GdkPixbuf *pixbuf;
+ GError *error = NULL;
+
+ icon_theme = gtk_icon_theme_get_default();
+
+ if (gtk_icon_theme_has_icon(icon_theme, key)) return FALSE;
+
+ pixbuf = gtk_icon_theme_load_icon(icon_theme,
+ icon, /* icon name */
+ 64, /* size */
+ 0, /* flags */
+ &error);
+ if (!pixbuf)
+ {
+ if (error)
+ {
+ DEBUG_1("Couldn't load icon %s: %s", icon, error->message);
+ g_error_free(error);
+ error = NULL;
+ }
+
+ if (strchr(icon, '.'))
+ {
+ /* try again without extension */
+ gchar *icon2 = remove_extension_from_path(icon);
+ pixbuf = gtk_icon_theme_load_icon(icon_theme,
+ icon2, /* icon name */
+ 64, /* size */
+ 0, /* flags */
+ &error);
+ if (error)
+ {
+ DEBUG_1("Couldn't load icon %s: %s", icon2, error->message);
+ g_error_free(error);
+ }
+ g_free(icon2);
+ }
+ }
+
+ if (!pixbuf) return FALSE;
+
+ register_stock_icon(key, pixbuf);
+ return TRUE;
+}
+
+gboolean pixbuf_scale_aspect(gint req_w, gint req_h,
+ gint old_w, gint old_h,
+ gint *new_w, gint *new_h)
+{
+ if (((gdouble)req_w / old_w) < ((gdouble)req_h / old_h))
+ {
+ *new_w = req_w;
+ *new_h = (gdouble)*new_w / old_w * old_h;
+ if (*new_h < 1) *new_h = 1;
+ }
+ else
+ {
+ *new_h = req_h;
+ *new_w = (gdouble)*new_h / old_h * old_w;
+ if (*new_w < 1) *new_w = 1;
+ }
+
+ return (*new_w != old_w || *new_h != old_h);
+}
+
+GdkPixbuf *pixbuf_fallback(FileData *fd, gint requested_width, gint requested_height)
+{
+ GdkPixbuf *pixbuf = pixbuf_inline(PIXBUF_INLINE_BROKEN); /* FIXME use different images according to FORMAT_CLASS */
+
+ if (requested_width && requested_height)
+ {
+ gint w = gdk_pixbuf_get_width(pixbuf);
+ gint h = gdk_pixbuf_get_height(pixbuf);
+
+ if (w > requested_width || h > requested_height)
+ {
+ gint nw, nh;
+
+ if (pixbuf_scale_aspect(requested_width, requested_height,
+ w, h, &nw, &nh))
+ {
+ GdkPixbuf *tmp;
+
+ tmp = pixbuf;
+ pixbuf = gdk_pixbuf_scale_simple(tmp, nw, nh, GDK_INTERP_TILES);
+ g_object_unref(G_OBJECT(tmp));
+ }
+ }
+ }
+ return pixbuf;
+}
+
+
+/*
+ *-----------------------------------------------------------------------------
+ * misc utils
+ *-----------------------------------------------------------------------------
+ */
+
+gboolean util_clip_region(gint x, gint y, gint w, gint h,
+ gint clip_x, gint clip_y, gint clip_w, gint clip_h,
+ gint *rx, gint *ry, gint *rw, gint *rh)
+{
+ if (clip_x + clip_w <= x ||
+ clip_x >= x + w ||
+ clip_y + clip_h <= y ||
+ clip_y >= y + h)
+ {
+ return FALSE;
+ }
+
+ *rx = MAX(x, clip_x);
+ *rw = MIN((x + w), (clip_x + clip_w)) - *rx;
+
+ *ry = MAX(y, clip_y);
+ *rh = MIN((y + h), (clip_y + clip_h)) - *ry;
+
+ return TRUE;
+}
+
/*
*-----------------------------------------------------------------------------
* pixbuf rotation
static void pixbuf_copy_block_rotate(guchar *src, gint src_row_stride, gint x, gint y,
guchar *dest, gint dest_row_stride, gint w, gint h,
- gint bytes_per_pixel, gint counter_clockwise)
+ gint bytes_per_pixel, gboolean counter_clockwise)
{
gint i, j;
guchar *sp;
if (bytes_per_pixel == 4) *(dp) = *(sp++); /* a */
}
}
-
+
}
static void pixbuf_copy_block(guchar *src, gint src_row_stride, gint w, gint h,
* Returns a copy of pixbuf src rotated 90 degrees clockwise or 90 counterclockwise
*
*/
-GdkPixbuf *pixbuf_copy_rotate_90(GdkPixbuf *src, gint counter_clockwise)
+GdkPixbuf *pixbuf_copy_rotate_90(GdkPixbuf *src, gboolean counter_clockwise)
{
GdkPixbuf *dest;
- gint has_alpha;
+ gboolean has_alpha;
gint sw, sh, srs;
gint dw, dh, drs;
guchar *s_pix;
- guchar *d_pix;
-#if 0
- guchar *sp;
- guchar *dp;
-#endif
+ guchar *d_pix;
gint i, j;
gint a;
GdkPixbuf *buffer;
- guchar *b_pix;
+ guchar *b_pix;
gint brs;
gint w, h;
}
}
- gdk_pixbuf_unref(buffer);
+ g_object_unref(buffer);
#if 0
/* this is the simple version of rotation (roughly 2-4x slower) */
* TO do a 180 degree rotations set both mirror and flipped TRUE
* if mirror and flip are FALSE, result is a simple copy.
*/
-GdkPixbuf *pixbuf_copy_mirror(GdkPixbuf *src, gint mirror, gint flip)
+GdkPixbuf *pixbuf_copy_mirror(GdkPixbuf *src, gboolean mirror, gboolean flip)
{
GdkPixbuf *dest;
- gint has_alpha;
+ gboolean has_alpha;
gint w, h, srs;
gint drs;
guchar *s_pix;
- guchar *d_pix;
+ guchar *d_pix;
guchar *sp;
- guchar *dp;
+ guchar *dp;
gint i, j;
gint a;
return dest;
}
+GdkPixbuf *pixbuf_apply_orientation(GdkPixbuf *pixbuf, gint orientation)
+{
+ GdkPixbuf *dest;
+ GdkPixbuf *tmp = NULL;
+
+ switch (orientation)
+ {
+ case EXIF_ORIENTATION_TOP_LEFT:
+ dest = gdk_pixbuf_copy(pixbuf);
+ break;
+ case EXIF_ORIENTATION_TOP_RIGHT:
+ /* mirrored */
+ dest = pixbuf_copy_mirror(pixbuf, TRUE, FALSE);
+ break;
+ case EXIF_ORIENTATION_BOTTOM_RIGHT:
+ /* upside down */
+ dest = pixbuf_copy_mirror(pixbuf, TRUE, TRUE);
+ break;
+ case EXIF_ORIENTATION_BOTTOM_LEFT:
+ /* flipped */
+ dest = pixbuf_copy_mirror(pixbuf, FALSE, TRUE);
+ break;
+ case EXIF_ORIENTATION_LEFT_TOP:
+ tmp = pixbuf_copy_mirror(pixbuf, FALSE, TRUE);
+ dest = pixbuf_copy_rotate_90(tmp, FALSE);
+ break;
+ case EXIF_ORIENTATION_RIGHT_TOP:
+ /* rotated -90 (270) */
+ dest = pixbuf_copy_rotate_90(pixbuf, FALSE);
+ break;
+ case EXIF_ORIENTATION_RIGHT_BOTTOM:
+ tmp = pixbuf_copy_mirror(pixbuf, FALSE, TRUE);
+ dest = pixbuf_copy_rotate_90(tmp, TRUE);
+ break;
+ case EXIF_ORIENTATION_LEFT_BOTTOM:
+ /* rotated 90 */
+ dest = pixbuf_copy_rotate_90(pixbuf, TRUE);
+ break;
+ default:
+ dest = gdk_pixbuf_copy(pixbuf);
+ break;
+ }
+ if (tmp) g_object_unref(tmp);
+ return dest;
+
+}
+
/*
*-----------------------------------------------------------------------------
- * pixbuf drawing
+ * pixbuf drawing (rectangles)
*-----------------------------------------------------------------------------
*/
gint x, gint y, gint w, gint h,
gint r, gint g, gint b, gint a)
{
- gint p_alpha;
+ gboolean has_alpha;
gint pw, ph, prs;
guchar *p_pix;
guchar *pp;
if (x < 0 || x + w > pw) return;
if (y < 0 || y + h > ph) return;
- p_alpha = gdk_pixbuf_get_has_alpha(pb);
+ has_alpha = gdk_pixbuf_get_has_alpha(pb);
prs = gdk_pixbuf_get_rowstride(pb);
p_pix = gdk_pixbuf_get_pixels(pb);
- for (i = 0; i < h; i++)
+ for (i = 0; i < h; i++)
{
- pp = p_pix + (y + i) * prs + (x * (p_alpha ? 4 : 3));
+ pp = p_pix + (y + i) * prs + (x * (has_alpha ? 4 : 3));
for (j = 0; j < w; j++)
{
*pp = (r * a + *pp * (256-a)) >> 8;
pp++;
*pp = (b * a + *pp * (256-a)) >> 8;
pp++;
- if (p_alpha) pp++;
+ if (has_alpha) pp++;
}
}
}
gint x, gint y, gint w, gint h,
gint r, gint g, gint b, gint a)
{
- gint p_alpha;
+ gboolean has_alpha;
gint pw, ph, prs;
guchar *p_pix;
guchar *pp;
if (x < 0 || x + w > pw) return;
if (y < 0 || y + h > ph) return;
- p_alpha = gdk_pixbuf_get_has_alpha(pb);
+ has_alpha = gdk_pixbuf_get_has_alpha(pb);
prs = gdk_pixbuf_get_rowstride(pb);
p_pix = gdk_pixbuf_get_pixels(pb);
- for (i = 0; i < h; i++)
+ for (i = 0; i < h; i++)
{
- pp = p_pix + (y + i) * prs + (x * (p_alpha ? 4 : 3));
+ pp = p_pix + (y + i) * prs + (x * (has_alpha ? 4 : 3));
for (j = 0; j < w; j++)
{
*pp = r; pp++;
*pp = g; pp++;
*pp = b; pp++;
- if (p_alpha) { *pp = a; pp++; }
+ if (has_alpha) { *pp = a; pp++; }
}
}
}
void pixbuf_pixel_set(GdkPixbuf *pb, gint x, gint y, gint r, gint g, gint b, gint a)
{
guchar *buf;
- gint has_alpha;
+ gboolean has_alpha;
gint rowstride;
guchar *p;
if (x < 0 || x >= gdk_pixbuf_get_width(pb) ||
- y < 0 || y >= gdk_pixbuf_get_height(pb)) return;
+ y < 0 || y >= gdk_pixbuf_get_height(pb)) return;
buf = gdk_pixbuf_get_pixels(pb);
has_alpha = gdk_pixbuf_get_has_alpha(pb);
rowstride = gdk_pixbuf_get_rowstride(pb);
- p = buf + (y * rowstride) + (x * (has_alpha ? 4 : 3));
+ p = buf + (y * rowstride) + (x * (has_alpha ? 4 : 3));
*p = r; p++;
*p = g; p++;
*p = b; p++;
guint8 r, guint8 g, guint8 b, guint8 a)
{
gint sw, sh, srs;
- gint s_alpha;
+ gboolean s_alpha;
gint s_step;
guchar *s_pix;
gint dw, dh, drs;
- gint d_alpha;
+ gboolean d_alpha;
gint d_step;
guchar *d_pix;
gint x, gint y,
guint8 r, guint8 g, guint8 b, guint8 a)
{
- GdkPixmap *pixmap;
GdkPixbuf *buffer;
gint w, h;
- GdkGC *gc;
gint sx, sy;
gint dw, dh;
-
- if (!widget || !widget->window) return;
+ cairo_surface_t *source;
+ cairo_t *cr;
pango_layout_get_pixel_size(layout, &w, &h);
- pixmap = gdk_pixmap_new(widget->window, w, h, -1);
-
- gc = gdk_gc_new(widget->window);
- gdk_gc_copy(gc, widget->style->black_gc);
- gdk_draw_rectangle(pixmap, gc, TRUE, 0, 0, w, h);
- gdk_gc_copy(gc, widget->style->white_gc);
- gdk_draw_layout(pixmap, gc, 0, 0, layout);
- g_object_unref(gc);
-
- buffer = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, w, h);
- gdk_pixbuf_get_from_drawable(buffer, pixmap,
- gdk_drawable_get_colormap(widget->window),
- 0, 0, 0, 0, w, h);
- g_object_unref(pixmap);
+ if (w < 1 || h < 1) return;
+
+ source = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w, h);
+
+ cr = cairo_create (source);
+ cairo_set_source_rgb(cr, 0, 0, 0);
+ cairo_rectangle (cr, 0, 0, w, h);
+ cairo_fill (cr);
+ cairo_set_source_rgb(cr, 1, 1, 1);
+ pango_cairo_show_layout (cr, layout);
+ cairo_destroy (cr);
+
+ buffer = gdk_pixbuf_new_from_data (cairo_image_surface_get_data (source),
+ GDK_COLORSPACE_RGB,
+ cairo_image_surface_get_format (source) == CAIRO_FORMAT_ARGB32,
+ 8,
+ cairo_image_surface_get_width (source),
+ cairo_image_surface_get_height (source),
+ cairo_image_surface_get_stride (source),
+ NULL,
+ NULL);
sx = 0;
sy = 0;
if (x + w > dw) w = dw - x;
if (y + h > dh) h = dh - y;
- pixbuf_copy_font(buffer, 0, 0,
+ pixbuf_copy_font(buffer, sx, sy,
pixbuf, x, y, w, h,
r, g, b, a);
g_object_unref(buffer);
+ cairo_surface_destroy(source);
}
+/*
+ *-----------------------------------------------------------------------------
+ * pixbuf drawing (triangle)
+ *-----------------------------------------------------------------------------
+ */
+
+void util_clip_triangle(gint x1, gint y1, gint x2, gint y2, gint x3, gint y3,
+ gint *rx, gint *ry, gint *rw, gint *rh)
+{
+ gint tx, ty, tw, th;
+
+ tx = MIN(x1, x2);
+ tx = MIN(tx, x3);
+ ty = MIN(y1, y2);
+ ty = MIN(ty, y3);
+ tw = MAX(abs(x1 - x2), abs(x2 - x3));
+ tw = MAX(tw, abs(x3 - x1));
+ th = MAX(abs(y1 - y2), abs(y2 - y3));
+ th = MAX(th, abs(y3 - y1));
+
+ *rx = tx;
+ *ry = ty;
+ *rw = tw;
+ *rh = th;
+}
+
+void pixbuf_draw_triangle(GdkPixbuf *pb,
+ gint clip_x, gint clip_y, gint clip_w, gint clip_h,
+ gint x1, gint y1, gint x2, gint y2, gint x3, gint y3,
+ guint8 r, guint8 g, guint8 b, guint8 a)
+{
+ gboolean has_alpha;
+ gint pw, ph, prs;
+ gint rx, ry, rw, rh;
+ gint tx, ty, tw, th;
+ gint fx1, fy1;
+ gint fx2, fy2;
+ gint fw, fh;
+ guchar *p_pix;
+ guchar *pp;
+ gint p_step;
+ gdouble slope1, slope2;
+ gint slope1_x, slope1_y;
+ gint y;
+ gint t;
+ gboolean middle = FALSE;
+
+ if (!pb) return;
+
+ pw = gdk_pixbuf_get_width(pb);
+ ph = gdk_pixbuf_get_height(pb);
+
+ if (!util_clip_region(0, 0, pw, ph,
+ clip_x, clip_y, clip_w, clip_h,
+ &rx, &ry, &rw, &rh)) return;
+
+ util_clip_triangle(x1, y1, x2, y2, x3, y3,
+ &tx, &ty, &tw, &th);
+
+ if (!util_clip_region(rx, ry, rw, rh,
+ tx, ty, tw, th,
+ &fx1, &fy1, &fw, &fh)) return;
+ fx2 = fx1 + fw;
+ fy2 = fy1 + fh;
+
+ has_alpha = gdk_pixbuf_get_has_alpha(pb);
+ prs = gdk_pixbuf_get_rowstride(pb);
+ p_pix = gdk_pixbuf_get_pixels(pb);
+
+ p_step = (has_alpha) ? 4 : 3;
+
+ if (y1 > y2)
+ {
+ t = x1; x1 = x2; x2 = t;
+ t = y1; y1 = y2; y2 = t;
+ }
+ if (y2 > y3)
+ {
+ t = x2; x2 = x3; x3 = t;
+ t = y2; y2 = y3; y3 = t;
+ }
+ if (y1 > y2)
+ {
+ t = x1; x1 = x2; x2 = t;
+ t = y1; y1 = y2; y2 = t;
+ }
+
+ slope1 = (gdouble)(y2 - y1);
+ if (slope1) slope1 = (gdouble)(x2 - x1) / slope1;
+ slope1_x = x1;
+ slope1_y = y1;
+ slope2 = (gdouble)(y3 - y1);
+ if (slope2) slope2 = (gdouble)(x3 - x1) / slope2;
+
+ for (y = fy1; y < fy2; y++)
+ {
+ gint xa, xb;
+
+ if (!middle && y > y2)
+ {
+ slope1 = (gdouble)(y3 - y2);
+ if (slope1) slope1 = (gdouble)(x3 - x2) / slope1;
+ slope1_x = x2;
+ slope1_y = y2;
+
+ middle = TRUE;
+ }
+
+ xa = slope1_x + ((gdouble)slope1 * (y - slope1_y) + 0.5);
+ xb = x1 + ((gdouble)slope2 * (y - y1) + 0.5);
+
+ if (xa > xb)
+ {
+ t = xa; xa = xb; xb = t;
+ }
+
+ xa = CLAMP(xa, fx1, fx2);
+ xb = CLAMP(xb, fx1, fx2);
+
+ pp = p_pix + y * prs + xa * p_step;
+
+ while (xa < xb)
+ {
+ *pp = (r * a + *pp * (256-a)) >> 8;
+ pp++;
+ *pp = (g * a + *pp * (256-a)) >> 8;
+ pp++;
+ *pp = (b * a + *pp * (256-a)) >> 8;
+ pp++;
+ if (has_alpha) pp++;
+
+ xa++;
+ }
+ }
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ * pixbuf drawing (line)
+ *-----------------------------------------------------------------------------
+ */
+
+static gboolean util_clip_line(gdouble clip_x, gdouble clip_y, gdouble clip_w, gdouble clip_h,
+ gdouble x1, gdouble y1, gdouble x2, gdouble y2,
+ gdouble *rx1, gdouble *ry1, gdouble *rx2, gdouble *ry2)
+{
+ gboolean flip = FALSE;
+ gdouble d;
+
+ if (x1 > x2)
+ {
+ gdouble t;
+
+ t = x1; x1 = x2; x2 = t;
+ t = y1; y1 = y2; y2 = t;
+ flip = TRUE;
+ }
+
+ if (x2 < clip_x || x1 > clip_x + clip_w) return FALSE;
+
+ if (y1 < y2)
+ {
+ if (y2 < clip_y || y1 > clip_y + clip_h) return FALSE;
+ }
+ else
+ {
+ if (y1 < clip_y || y2 > clip_y + clip_h) return FALSE;
+ }
+
+ d = x2 - x1;
+ if (d > 0.0)
+ {
+ gdouble slope;
+
+ slope = (y2 - y1) / d;
+ if (x1 < clip_x)
+ {
+ y1 = y1 + slope * (clip_x - x1);
+ x1 = clip_x;
+ }
+ if (x2 > clip_x + clip_w)
+ {
+ y2 = y2 + slope * (clip_x + clip_w - x2);
+ x2 = clip_x + clip_w;
+ }
+ }
+
+ if (y1 < y2)
+ {
+ if (y2 < clip_y || y1 > clip_y + clip_h) return FALSE;
+ }
+ else
+ {
+ gdouble t;
+
+ if (y1 < clip_y || y2 > clip_y + clip_h) return FALSE;
+
+ t = x1; x1 = x2; x2 = t;
+ t = y1; y1 = y2; y2 = t;
+ flip = !flip;
+ }
+
+ d = y2 - y1;
+ if (d > 0.0)
+ {
+ gdouble slope;
+
+ slope = (x2 - x1) / d;
+ if (y1 < clip_y)
+ {
+ x1 = x1 + slope * (clip_y - y1);
+ y1 = clip_y;
+ }
+ if (y2 > clip_y + clip_h)
+ {
+ x2 = x2 + slope * (clip_y + clip_h - y2);
+ y2 = clip_y + clip_h;
+ }
+ }
+
+ if (flip)
+ {
+ *rx1 = x2;
+ *ry1 = y2;
+ *rx2 = x1;
+ *ry2 = y1;
+ }
+ else
+ {
+ *rx1 = x1;
+ *ry1 = y1;
+ *rx2 = x2;
+ *ry2 = y2;
+ }
+
+ return TRUE;
+}
+
+void pixbuf_draw_line(GdkPixbuf *pb,
+ gint clip_x, gint clip_y, gint clip_w, gint clip_h,
+ gint x1, gint y1, gint x2, gint y2,
+ guint8 r, guint8 g, guint8 b, guint8 a)
+{
+ gboolean has_alpha;
+ gint pw, ph, prs;
+ gint rx, ry, rw, rh;
+ gdouble rx1, ry1, rx2, ry2;
+ guchar *p_pix;
+ guchar *pp;
+ gint p_step;
+ gdouble slope;
+ gdouble x, y;
+ gint px, py;
+ gint cx1, cy1, cx2, cy2;
+
+ if (!pb) return;
+
+ pw = gdk_pixbuf_get_width(pb);
+ ph = gdk_pixbuf_get_height(pb);
+
+ if (!util_clip_region(0, 0, pw, ph,
+ clip_x, clip_y, clip_w, clip_h,
+ &rx, &ry, &rw, &rh)) return;
+ if (!util_clip_line((gdouble)rx, (gdouble)ry, (gdouble)rw, (gdouble)rh,
+ (gdouble)x1, (gdouble)y1, (gdouble)x2, (gdouble)y2,
+ &rx1, &ry1, &rx2, &ry2)) return;
+
+ cx1 = rx;
+ cy1 = ry;
+ cx2 = rx + rw;
+ cy2 = ry + rh;
+
+ has_alpha = gdk_pixbuf_get_has_alpha(pb);
+ prs = gdk_pixbuf_get_rowstride(pb);
+ p_pix = gdk_pixbuf_get_pixels(pb);
+
+ p_step = (has_alpha) ? 4 : 3;
+
+ if (fabs(rx2 - rx1) > fabs(ry2 - ry1))
+ {
+ if (rx1 > rx2)
+ {
+ gdouble t;
+ t = rx1; rx1 = rx2; rx2 = t;
+ t = ry1; ry1 = ry2; ry2 = t;
+ }
+
+ slope = rx2 - rx1;
+ if (slope != 0.0) slope = (ry2 - ry1) / slope;
+ for (x = rx1; x < rx2; x += 1.0)
+ {
+ px = (gint)(x + 0.5);
+ py = (gint)(ry1 + (x - rx1) * slope + 0.5);
+
+ if (px >= cx1 && px < cx2 && py >= cy1 && py < cy2)
+ {
+ pp = p_pix + py * prs + px * p_step;
+ *pp = (r * a + *pp * (256-a)) >> 8;
+ pp++;
+ *pp = (g * a + *pp * (256-a)) >> 8;
+ pp++;
+ *pp = (b * a + *pp * (256-a)) >> 8;
+ }
+ }
+ }
+ else
+ {
+ if (ry1 > ry2)
+ {
+ gdouble t;
+ t = rx1; rx1 = rx2; rx2 = t;
+ t = ry1; ry1 = ry2; ry2 = t;
+ }
+
+ slope = ry2 - ry1;
+ if (slope != 0.0) slope = (rx2 - rx1) / slope;
+ for (y = ry1; y < ry2; y += 1.0)
+ {
+ px = (gint)(rx1 + (y - ry1) * slope + 0.5);
+ py = (gint)(y + 0.5);
+
+ if (px >= cx1 && px < cx2 && py >= cy1 && py < cy2)
+ {
+ pp = p_pix + py * prs + px * p_step;
+ *pp = (r * a + *pp * (256-a)) >> 8;
+ pp++;
+ *pp = (g * a + *pp * (256-a)) >> 8;
+ pp++;
+ *pp = (b * a + *pp * (256-a)) >> 8;
+ }
+ }
+ }
+}
+
+/*
+ *-----------------------------------------------------------------------------
+ * pixbuf drawing (fades and shadows)
+ *-----------------------------------------------------------------------------
+ */
+
+static void pixbuf_draw_fade_linear(guchar *p_pix, gint prs, gboolean has_alpha,
+ gint s, gboolean vertical, gint border,
+ gint x1, gint y1, gint x2, gint y2,
+ guint8 r, guint8 g, guint8 b, guint8 a)
+{
+ guchar *pp;
+ gint p_step;
+ guint8 n = a;
+ gint i, j;
+
+ p_step = (has_alpha) ? 4 : 3;
+ for (j = y1; j < y2; j++)
+ {
+ pp = p_pix + j * prs + x1 * p_step;
+ if (!vertical) n = a - a * abs(j - s) / border;
+ for (i = x1; i < x2; i++)
+ {
+ if (vertical) n = a - a * abs(i - s) / border;
+ *pp = (r * n + *pp * (256-n)) >> 8;
+ pp++;
+ *pp = (g * n + *pp * (256-n)) >> 8;
+ pp++;
+ *pp = (b * n + *pp * (256-n)) >> 8;
+ pp++;
+ if (has_alpha) pp++;
+ }
+ }
+}
+
+static void pixbuf_draw_fade_radius(guchar *p_pix, gint prs, gboolean has_alpha,
+ gint sx, gint sy, gint border,
+ gint x1, gint y1, gint x2, gint y2,
+ guint8 r, guint8 g, guint8 b, guint8 a)
+{
+ guchar *pp;
+ gint p_step;
+ gint i, j;
+
+ p_step = (has_alpha) ? 4 : 3;
+ for (j = y1; j < y2; j++)
+ {
+ pp = p_pix + j * prs + x1 * p_step;
+ for (i = x1; i < x2; i++)
+ {
+ guint8 n;
+ gint r;
+
+ r = MIN(border, (gint)sqrt((i-sx)*(i-sx) + (j-sy)*(j-sy)));
+ n = a - a * r / border;
+ *pp = (r * n + *pp * (256-n)) >> 8;
+ pp++;
+ *pp = (g * n + *pp * (256-n)) >> 8;
+ pp++;
+ *pp = (b * n + *pp * (256-n)) >> 8;
+ pp++;
+ if (has_alpha) pp++;
+ }
+ }
+}
+
+void pixbuf_draw_shadow(GdkPixbuf *pb,
+ gint clip_x, gint clip_y, gint clip_w, gint clip_h,
+ gint x, gint y, gint w, gint h, gint border,
+ guint8 r, guint8 g, guint8 b, guint8 a)
+{
+ gint has_alpha;
+ gint pw, ph, prs;
+ gint rx, ry, rw, rh;
+ gint fx, fy, fw, fh;
+ guchar *p_pix;
+
+ if (!pb) return;
+
+ pw = gdk_pixbuf_get_width(pb);
+ ph = gdk_pixbuf_get_height(pb);
+
+ if (!util_clip_region(0, 0, pw, ph,
+ clip_x, clip_y, clip_w, clip_h,
+ &rx, &ry, &rw, &rh)) return;
+
+ has_alpha = gdk_pixbuf_get_has_alpha(pb);
+ prs = gdk_pixbuf_get_rowstride(pb);
+ p_pix = gdk_pixbuf_get_pixels(pb);
+
+ if (util_clip_region(x + border, y + border, w - border * 2, h - border * 2,
+ rx, ry, rw, rh,
+ &fx, &fy, &fw, &fh))
+ {
+ pixbuf_draw_rect_fill(pb, fx, fy, fw, fh, r, g, b, a);
+ }
+
+ if (border < 1) return;
+
+ if (util_clip_region(x, y + border, border, h - border * 2,
+ rx, ry, rw, rh,
+ &fx, &fy, &fw, &fh))
+ {
+ pixbuf_draw_fade_linear(p_pix, prs, has_alpha,
+ x + border, TRUE, border,
+ fx, fy, fx + fw, fy + fh,
+ r, g, b, a);
+ }
+ if (util_clip_region(x + w - border, y + border, border, h - border * 2,
+ rx, ry, rw, rh,
+ &fx, &fy, &fw, &fh))
+ {
+ pixbuf_draw_fade_linear(p_pix, prs, has_alpha,
+ x + w - border, TRUE, border,
+ fx, fy, fx + fw, fy + fh,
+ r, g, b, a);
+ }
+ if (util_clip_region(x + border, y, w - border * 2, border,
+ rx, ry, rw, rh,
+ &fx, &fy, &fw, &fh))
+ {
+ pixbuf_draw_fade_linear(p_pix, prs, has_alpha,
+ y + border, FALSE, border,
+ fx, fy, fx + fw, fy + fh,
+ r, g, b, a);
+ }
+ if (util_clip_region(x + border, y + h - border, w - border * 2, border,
+ rx, ry, rw, rh,
+ &fx, &fy, &fw, &fh))
+ {
+ pixbuf_draw_fade_linear(p_pix, prs, has_alpha,
+ y + h - border, FALSE, border,
+ fx, fy, fx + fw, fy + fh,
+ r, g, b, a);
+ }
+ if (util_clip_region(x, y, border, border,
+ rx, ry, rw, rh,
+ &fx, &fy, &fw, &fh))
+ {
+ pixbuf_draw_fade_radius(p_pix, prs, has_alpha,
+ x + border, y + border, border,
+ fx, fy, fx + fw, fy + fh,
+ r, g, b, a);
+ }
+ if (util_clip_region(x + w - border, y, border, border,
+ rx, ry, rw, rh,
+ &fx, &fy, &fw, &fh))
+ {
+ pixbuf_draw_fade_radius(p_pix, prs, has_alpha,
+ x + w - border, y + border, border,
+ fx, fy, fx + fw, fy + fh,
+ r, g, b, a);
+ }
+ if (util_clip_region(x, y + h - border, border, border,
+ rx, ry, rw, rh,
+ &fx, &fy, &fw, &fh))
+ {
+ pixbuf_draw_fade_radius(p_pix, prs, has_alpha,
+ x + border, y + h - border, border,
+ fx, fy, fx + fw, fy + fh,
+ r, g, b, a);
+ }
+ if (util_clip_region(x + w - border, y + h - border, border, border,
+ rx, ry, rw, rh,
+ &fx, &fy, &fw, &fh))
+ {
+ pixbuf_draw_fade_radius(p_pix, prs, has_alpha,
+ x + w - border, y + h - border, border,
+ fx, fy, fx + fw, fy + fh,
+ r, g, b, a);
+ }
+}
+
+
+/*
+ *-----------------------------------------------------------------------------
+ * pixbuf color alterations
+ *-----------------------------------------------------------------------------
+ */
+
+void pixbuf_desaturate_rect(GdkPixbuf *pb,
+ gint x, gint y, gint w, gint h)
+{
+ gboolean has_alpha;
+ gint pw, ph, prs;
+ guchar *p_pix;
+ guchar *pp;
+ gint i, j;
+
+ if (!pb) return;
+
+ pw = gdk_pixbuf_get_width(pb);
+ ph = gdk_pixbuf_get_height(pb);
+
+ if (x < 0 || x + w > pw) return;
+ if (y < 0 || y + h > ph) return;
+
+ has_alpha = gdk_pixbuf_get_has_alpha(pb);
+ prs = gdk_pixbuf_get_rowstride(pb);
+ p_pix = gdk_pixbuf_get_pixels(pb);
+
+ for (i = 0; i < h; i++)
+ {
+ pp = p_pix + (y + i) * prs + (x * (has_alpha ? 4 : 3));
+ for (j = 0; j < w; j++)
+ {
+ guint8 grey;
+
+ grey = (pp[0] + pp[1] + pp[2]) / 3;
+ *pp = grey;
+ pp++;
+ *pp = grey;
+ pp++;
+ *pp = grey;
+ pp++;
+ if (has_alpha) pp++;
+ }
+ }
+}
+/* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */
projects / geeqie.git / blobdiff