+++ /dev/null
-/*
- * Geeqie
- * (C) 2004 John Ellis
- * Copyright (C) 2008 The Geeqie Team
- *
- * Author: John Ellis
- *
- * This software is released under the GNU General Public License (GNU GPL).
- * Please read the included file COPYING for more information.
- * This software comes with no warranty of any kind, use at your own risk!
- */
-
-
-#include "main.h"
-#include "pixbuf_util.h"
-
-#include "icons/icons_inline.h"
-
-#include <math.h>
-
-
-/*
- *-----------------------------------------------------------------------------
- * png save
- *-----------------------------------------------------------------------------
- */
-
-gboolean pixbuf_to_file_as_png(GdkPixbuf *pixbuf, const char *filename)
-{
- GError *error = NULL;
- gint ret;
-
- if (!pixbuf || !filename) return FALSE;
-
- ret = gdk_pixbuf_save(pixbuf, filename, "png", &error,
- "tEXt::Software", GQ_APPNAME " " VERSION, NULL);
-
- if (error)
- {
- printf("Error saving png file: %s\n", error->message);
- g_error_free(error);
- }
-
- return ret;
-}
-
-/*
- *-----------------------------------------------------------------------------
- * jpeg save
- *-----------------------------------------------------------------------------
- */
-
-gboolean pixbuf_to_file_as_jpg(GdkPixbuf *pixbuf, const gchar *filename, gint quality)
-{
- GError *error = NULL;
- gchar *qbuf;
- gboolean ret;
-
- if (!pixbuf || !filename) return FALSE;
-
- if (quality == -1) quality = 75;
- if (quality < 1 || quality > 100)
- {
- printf("Jpeg not saved, invalid quality %d\n", quality);
- return FALSE;
- }
-
- qbuf = g_strdup_printf("%d", quality);
- ret = gdk_pixbuf_save(pixbuf, filename, "jpeg", &error, "quality", qbuf, NULL);
- g_free(qbuf);
-
- if (error)
- {
- printf("Error saving jpeg to %s\n%s\n", filename, error->message);
- g_error_free(error);
- }
-
- return ret;
-}
-
-/*
- *-----------------------------------------------------------------------------
- * pixbuf from inline
- *-----------------------------------------------------------------------------
- */
-
-typedef struct _PixbufInline PixbufInline;
-struct _PixbufInline
-{
- const gchar *key;
- const guint8 *data;
-};
-
-static PixbufInline inline_pixbuf_data[] = {
- { PIXBUF_INLINE_FOLDER_CLOSED, folder_closed },
- { PIXBUF_INLINE_FOLDER_LOCKED, folder_locked },
- { PIXBUF_INLINE_FOLDER_OPEN, folder_open },
- { PIXBUF_INLINE_FOLDER_UP, folder_up },
- { PIXBUF_INLINE_SCROLLER, icon_scroller },
- { PIXBUF_INLINE_BROKEN, icon_broken },
- { 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 }
-};
-
-GdkPixbuf *pixbuf_inline(const gchar *key)
-{
- gint i;
-
- if (!key) return NULL;
-
- i = 0;
- while (inline_pixbuf_data[i].key)
- {
- if (strcmp(inline_pixbuf_data[i].key, key) == 0)
- {
- return gdk_pixbuf_new_from_inline(-1, inline_pixbuf_data[i].data, FALSE, NULL);
- }
- i++;
- }
-
- printf("warning: inline pixbuf key \"%s\" not found.\n", key);
-
- return NULL;
-}
-
-/*
- *-----------------------------------------------------------------------------
- * misc utils
- *-----------------------------------------------------------------------------
- */
-
-gint 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 i, j;
- guchar *sp;
- guchar *dp;
-
- for (i = 0; i < h; i++)
- {
- sp = src + ((i + y) * src_row_stride) + (x * bytes_per_pixel);
- for (j = 0; j < w; j++)
- {
- if (counter_clockwise)
- {
- dp = dest + ((w - j - 1) * dest_row_stride) + (i * bytes_per_pixel);
- }
- else
- {
- dp = dest + (j * dest_row_stride) + ((h - i - 1) * bytes_per_pixel);
- }
- *(dp++) = *(sp++); /* r */
- *(dp++) = *(sp++); /* g */
- *(dp++) = *(sp++); /* b */
- if (bytes_per_pixel == 4) *(dp) = *(sp++); /* a */
- }
- }
-
-}
-
-static void pixbuf_copy_block(guchar *src, gint src_row_stride, gint w, gint h,
- guchar *dest, gint dest_row_stride, gint x, gint y, gint bytes_per_pixel)
-{
- gint i;
- guchar *sp;
- guchar *dp;
-
- for (i = 0; i < h; i++)
- {
- sp = src + (i * src_row_stride);
- dp = dest + ((y + i) * dest_row_stride) + (x * bytes_per_pixel);
- memcpy(dp, sp, w * bytes_per_pixel);
- }
-}
-
-#define ROTATE_BUFFER_WIDTH 48
-#define ROTATE_BUFFER_HEIGHT 48
-
-/*
- * Returns a copy of pixbuf src rotated 90 degrees clockwise or 90 counterclockwise
- *
- */
-GdkPixbuf *pixbuf_copy_rotate_90(GdkPixbuf *src, gint counter_clockwise)
-{
- GdkPixbuf *dest;
- gint has_alpha;
- gint sw, sh, srs;
- gint dw, dh, drs;
- guchar *s_pix;
- guchar *d_pix;
-#if 0
- guchar *sp;
- guchar *dp;
-#endif
- gint i, j;
- gint a;
- GdkPixbuf *buffer;
- guchar *b_pix;
- gint brs;
- gint w, h;
-
- if (!src) return NULL;
-
- sw = gdk_pixbuf_get_width(src);
- sh = gdk_pixbuf_get_height(src);
- has_alpha = gdk_pixbuf_get_has_alpha(src);
- srs = gdk_pixbuf_get_rowstride(src);
- s_pix = gdk_pixbuf_get_pixels(src);
-
- dw = sh;
- dh = sw;
- dest = gdk_pixbuf_new(GDK_COLORSPACE_RGB, has_alpha, 8, dw, dh);
- drs = gdk_pixbuf_get_rowstride(dest);
- d_pix = gdk_pixbuf_get_pixels(dest);
-
- a = (has_alpha ? 4 : 3);
-
- buffer = gdk_pixbuf_new(GDK_COLORSPACE_RGB, has_alpha, 8,
- ROTATE_BUFFER_WIDTH, ROTATE_BUFFER_HEIGHT);
- b_pix = gdk_pixbuf_get_pixels(buffer);
- brs = gdk_pixbuf_get_rowstride(buffer);
-
- for (i = 0; i < sh; i+= ROTATE_BUFFER_WIDTH)
- {
- w = MIN(ROTATE_BUFFER_WIDTH, (sh - i));
- for (j = 0; j < sw; j += ROTATE_BUFFER_HEIGHT)
- {
- gint x, y;
-
- h = MIN(ROTATE_BUFFER_HEIGHT, (sw - j));
- pixbuf_copy_block_rotate(s_pix, srs, j, i,
- b_pix, brs, h, w,
- a, counter_clockwise);
-
- if (counter_clockwise)
- {
- x = i;
- y = sw - h - j;
- }
- else
- {
- x = sh - w - i;
- y = j;
- }
- pixbuf_copy_block(b_pix, brs, w, h,
- d_pix, drs, x, y, a);
- }
- }
-
- gdk_pixbuf_unref(buffer);
-
-#if 0
- /* this is the simple version of rotation (roughly 2-4x slower) */
-
- for (i = 0; i < sh; i++)
- {
- sp = s_pix + (i * srs);
- for (j = 0; j < sw; j++)
- {
- if (counter_clockwise)
- {
- dp = d_pix + ((dh - j - 1) * drs) + (i * a);
- }
- else
- {
- dp = d_pix + (j * drs) + ((dw - i - 1) * a);
- }
-
- *(dp++) = *(sp++); /* r */
- *(dp++) = *(sp++); /* g */
- *(dp++) = *(sp++); /* b */
- if (has_alpha) *(dp) = *(sp++); /* a */
- }
- }
-#endif
-
- return dest;
-}
-
-/*
- * Returns a copy of pixbuf mirrored and or flipped.
- * 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 *dest;
- gint has_alpha;
- gint w, h, srs;
- gint drs;
- guchar *s_pix;
- guchar *d_pix;
- guchar *sp;
- guchar *dp;
- gint i, j;
- gint a;
-
- if (!src) return NULL;
-
- w = gdk_pixbuf_get_width(src);
- h = gdk_pixbuf_get_height(src);
- has_alpha = gdk_pixbuf_get_has_alpha(src);
- srs = gdk_pixbuf_get_rowstride(src);
- s_pix = gdk_pixbuf_get_pixels(src);
-
- dest = gdk_pixbuf_new(GDK_COLORSPACE_RGB, has_alpha, 8, w, h);
- drs = gdk_pixbuf_get_rowstride(dest);
- d_pix = gdk_pixbuf_get_pixels(dest);
-
- a = has_alpha ? 4 : 3;
-
- for (i = 0; i < h; i++)
- {
- sp = s_pix + (i * srs);
- if (flip)
- {
- dp = d_pix + ((h - i - 1) * drs);
- }
- else
- {
- dp = d_pix + (i * drs);
- }
- if (mirror)
- {
- dp += (w - 1) * a;
- for (j = 0; j < w; j++)
- {
- *(dp++) = *(sp++); /* r */
- *(dp++) = *(sp++); /* g */
- *(dp++) = *(sp++); /* b */
- if (has_alpha) *(dp) = *(sp++); /* a */
- dp -= (a + 3);
- }
- }
- else
- {
- for (j = 0; j < w; j++)
- {
- *(dp++) = *(sp++); /* r */
- *(dp++) = *(sp++); /* g */
- *(dp++) = *(sp++); /* b */
- if (has_alpha) *(dp++) = *(sp++); /* a */
- }
- }
- }
-
- return dest;
-}
-
-
-/*
- *-----------------------------------------------------------------------------
- * pixbuf drawing (rectangles)
- *-----------------------------------------------------------------------------
- */
-
-/*
- * Fills region of pixbuf at x,y over w,h
- * with colors red (r), green (g), blue (b)
- * applying alpha (a), use a=255 for solid.
- */
-void pixbuf_draw_rect_fill(GdkPixbuf *pb,
- gint x, gint y, gint w, gint h,
- gint r, gint g, gint b, gint a)
-{
- gint p_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;
-
- p_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 * (p_alpha ? 4 : 3));
- for (j = 0; j < w; j++)
- {
- *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 (p_alpha) pp++;
- }
- }
-}
-
-void pixbuf_draw_rect(GdkPixbuf *pb,
- gint x, gint y, gint w, gint h,
- gint r, gint g, gint b, gint a,
- gint left, gint right, gint top, gint bottom)
-{
- pixbuf_draw_rect_fill(pb, x + left, y, w - left - right, top,
- r, g, b ,a);
- pixbuf_draw_rect_fill(pb, x + w - right, y, right, h,
- r, g, b ,a);
- pixbuf_draw_rect_fill(pb, x + left, y + h - bottom, w - left - right, bottom,
- r, g, b ,a);
- pixbuf_draw_rect_fill(pb, x, y, left, h,
- r, g, b ,a);
-}
-
-void pixbuf_set_rect_fill(GdkPixbuf *pb,
- gint x, gint y, gint w, gint h,
- gint r, gint g, gint b, gint a)
-{
- gint p_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;
-
- p_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 * (p_alpha ? 4 : 3));
- for (j = 0; j < w; j++)
- {
- *pp = r; pp++;
- *pp = g; pp++;
- *pp = b; pp++;
- if (p_alpha) { *pp = a; pp++; }
- }
- }
-}
-
-void pixbuf_set_rect(GdkPixbuf *pb,
- gint x, gint y, gint w, gint h,
- gint r, gint g, gint b, gint a,
- gint left, gint right, gint top, gint bottom)
-{
- pixbuf_set_rect_fill(pb, x + left, y, w - left - right, top,
- r, g, b ,a);
- pixbuf_set_rect_fill(pb, x + w - right, y, right, h,
- r, g, b ,a);
- pixbuf_set_rect_fill(pb, x + left, y + h - bottom, w - left - right, bottom,
- r, g, b ,a);
- pixbuf_set_rect_fill(pb, x, y, left, h,
- r, g, b ,a);
-}
-
-void pixbuf_pixel_set(GdkPixbuf *pb, gint x, gint y, gint r, gint g, gint b, gint a)
-{
- guchar *buf;
- gint has_alpha;
- gint rowstride;
- guchar *p;
-
- if (x < 0 || x >= gdk_pixbuf_get_width(pb) ||
- 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 = r; p++;
- *p = g; p++;
- *p = b; p++;
- if (has_alpha) *p = a;
-}
-
-
-/*
- *-----------------------------------------------------------------------------
- * pixbuf text rendering
- *-----------------------------------------------------------------------------
- */
-
-static void pixbuf_copy_font(GdkPixbuf *src, gint sx, gint sy,
- GdkPixbuf *dest, gint dx, gint dy,
- gint w, gint h,
- guint8 r, guint8 g, guint8 b, guint8 a)
-{
- gint sw, sh, srs;
- gint s_alpha;
- gint s_step;
- guchar *s_pix;
- gint dw, dh, drs;
- gint d_alpha;
- gint d_step;
- guchar *d_pix;
-
- guchar *sp;
- guchar *dp;
- gint i, j;
-
- if (!src || !dest) return;
-
- sw = gdk_pixbuf_get_width(src);
- sh = gdk_pixbuf_get_height(src);
-
- if (sx < 0 || sx + w > sw) return;
- if (sy < 0 || sy + h > sh) return;
-
- dw = gdk_pixbuf_get_width(dest);
- dh = gdk_pixbuf_get_height(dest);
-
- if (dx < 0 || dx + w > dw) return;
- if (dy < 0 || dy + h > dh) return;
-
- s_alpha = gdk_pixbuf_get_has_alpha(src);
- d_alpha = gdk_pixbuf_get_has_alpha(dest);
- srs = gdk_pixbuf_get_rowstride(src);
- drs = gdk_pixbuf_get_rowstride(dest);
- s_pix = gdk_pixbuf_get_pixels(src);
- d_pix = gdk_pixbuf_get_pixels(dest);
-
- s_step = (s_alpha) ? 4 : 3;
- d_step = (d_alpha) ? 4 : 3;
-
- for (i = 0; i < h; i++)
- {
- sp = s_pix + (sy + i) * srs + sx * s_step;
- dp = d_pix + (dy + i) * drs + dx * d_step;
- for (j = 0; j < w; j++)
- {
- if (*sp)
- {
- guint8 asub;
-
- asub = a * sp[0] / 255;
- *dp = (r * asub + *dp * (256-asub)) >> 8;
- dp++;
- asub = a * sp[1] / 255;
- *dp = (g * asub + *dp * (256-asub)) >> 8;
- dp++;
- asub = a * sp[2] / 255;
- *dp = (b * asub + *dp * (256-asub)) >> 8;
- dp++;
-
- if (d_alpha)
- {
- *dp = MAX(*dp, a * ((sp[0] + sp[1] + sp[2]) / 3) / 255);
- dp++;
- }
- }
- else
- {
- dp += d_step;
- }
-
- sp += s_step;
- }
- }
-}
-
-void pixbuf_draw_layout(GdkPixbuf *pixbuf, PangoLayout *layout, GtkWidget *widget,
- 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;
-
- pango_layout_get_pixel_size(layout, &w, &h);
- if (w < 1 || h < 1) return;
-
- 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);
-
- sx = 0;
- sy = 0;
- dw = gdk_pixbuf_get_width(pixbuf);
- dh = gdk_pixbuf_get_height(pixbuf);
-
- if (x < 0)
- {
- w += x;
- sx = -x;
- x = 0;
- }
-
- if (y < 0)
- {
- h += y;
- sy = -y;
- y = 0;
- }
-
- if (x + w > dw) w = dw - x;
- if (y + h > dh) h = dh - y;
-
- pixbuf_copy_font(buffer, sx, sy,
- pixbuf, x, y, w, h,
- r, g, b, a);
-
- g_object_unref(buffer);
-}
-
-/*
- *-----------------------------------------------------------------------------
- * 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)
-{
- gint p_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;
- gint 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;
-
- p_alpha = gdk_pixbuf_get_has_alpha(pb);
- prs = gdk_pixbuf_get_rowstride(pb);
- p_pix = gdk_pixbuf_get_pixels(pb);
-
- p_step = (p_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 (p_alpha) pp++;
-
- xa++;
- }
- }
-}
-
-/*
- *-----------------------------------------------------------------------------
- * pixbuf drawing (line)
- *-----------------------------------------------------------------------------
- */
-
-static gint 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)
-{
- gint 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;
- }
-
-#if 0
- if (x1 >= clip_x && x2 <= clip_x + clip_w)
- {
- if (y1 < y2)
- {
- if (y1 >= clip_y && y2 <= clip_y + clip_h) return TRUE;
- }
- else
- {
- if (y2 >= clip_y && y1 <= clip_y + clip_h) return TRUE;
- }
- }
-#endif
-
- 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)
-{
- gint p_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;
-
- p_alpha = gdk_pixbuf_get_has_alpha(pb);
- prs = gdk_pixbuf_get_rowstride(pb);
- p_pix = gdk_pixbuf_get_pixels(pb);
-
- p_step = (p_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, gint p_alpha,
- gint s, gint 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 = (p_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 (p_alpha) pp++;
- }
- }
-}
-
-static void pixbuf_draw_fade_radius(guchar *p_pix, gint prs, gint p_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 = (p_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 (p_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 p_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;
-
- p_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, p_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, p_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, p_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, p_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, p_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, p_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, p_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, p_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)
-{
- gint p_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;
-
- p_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 * (p_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 (p_alpha) pp++;
- }
- }
-}
projects / geeqie.git / blobdiff