mirror of https://github.com/GNOME/gimp.git
Ooops, put the crop.c into the wrong directory. Here it comes...
--Sven
This commit is contained in:
Sven Neumann
parent
4f4bf6a81a
commit
83bfd05c71
174
app/crop.c
174
app/crop.c
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@ -88,8 +88,6 @@ struct _CropOptions
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GtkWidget *default_to_crop_w;
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};
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typedef guchar * (*GetColorFunc) (GtkObject *, int, int);
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/* the crop tool options */
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static CropOptions *crop_options = NULL;
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@ -126,12 +124,20 @@ static void crop_resize_callback (GtkWidget *, gpointer);
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static void crop_close_callback (GtkWidget *, gpointer);
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/* Crop area-select functions */
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static void crop_selection_callback (GtkWidget *, gpointer);
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static void crop_automatic_callback (GtkWidget *, gpointer);
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static int crop_colors_equal (guchar *col1, guchar *col2, int bytes);
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static int crop_guess_bgcolor (GtkObject *, GetColorFunc,
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int width, int height,
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int bytes, guchar *color);
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typedef enum {
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AUTO_CROP_NOTHING = 0,
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AUTO_CROP_ALPHA = 1,
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AUTO_CROP_COLOR = 2
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} AutoCropType;
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typedef guchar * (*GetColorFunc) (GtkObject *, int, int);
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typedef AutoCropType (*ColorsEqualFunc) (guchar *, guchar *, int);
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static void crop_selection_callback (GtkWidget *, gpointer);
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static void crop_automatic_callback (GtkWidget *, gpointer);
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static AutoCropType crop_guess_bgcolor (GtkObject *, GetColorFunc, int, int, int, int, guchar *);
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static int crop_colors_equal (guchar *, guchar *, int);
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static int crop_colors_alpha (guchar *, guchar *, int);
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/* Crop dialog callback funtions */
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static void crop_orig_changed (GtkWidget *, gpointer);
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@ -1240,6 +1246,7 @@ crop_selection_callback (GtkWidget *w,
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draw_core_resume (crop->core, tool);
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}
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static void
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crop_automatic_callback (GtkWidget *w,
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gpointer client_data)
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@ -1249,13 +1256,15 @@ crop_automatic_callback (GtkWidget *w,
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GDisplay * gdisp;
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GimpDrawable * active_drawable;
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GetColorFunc get_color_func;
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ColorsEqualFunc colors_equal_func;
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GtkObject *get_color_obj;
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guchar bgcolor[4] = {0, 0, 0, 0};
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gint has_alpha = FALSE;
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guchar *color;
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gint width, height, bytes;
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gint x, y, abort;
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gint x1, y1, x2, y2;
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tool = active_tool;
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crop = (Crop *) tool->private;
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gdisp = (GDisplay *) tool->gdisp_ptr;
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@ -1270,6 +1279,8 @@ crop_automatic_callback (GtkWidget *w,
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width = drawable_width (GIMP_DRAWABLE (active_drawable));
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height = drawable_height (GIMP_DRAWABLE (active_drawable));
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bytes = drawable_bytes (GIMP_DRAWABLE (active_drawable));
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if (drawable_has_alpha (GIMP_DRAWABLE (active_drawable)))
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has_alpha = TRUE;
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get_color_obj = GTK_OBJECT (active_drawable);
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get_color_func = (GetColorFunc) gimp_drawable_get_color_at;
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drawable_offsets (GIMP_DRAWABLE (active_drawable), &crop->tx1, &crop->ty1);
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@ -1280,28 +1291,37 @@ crop_automatic_callback (GtkWidget *w,
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{
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width = gdisp->gimage->width;
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height = gdisp->gimage->height;
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bytes = gimp_image_composite_bytes (gdisp->gimage);
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get_color_obj = GTK_OBJECT (gdisp->gimage);
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get_color_func = (GetColorFunc) gimp_image_get_color_at;
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/* gimp_image_get_color_at always returns an alpha value */
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bytes = 4;
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has_alpha = TRUE;
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crop->tx1 = crop->ty1 = 0;
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crop->tx2 = width;
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crop->ty2 = height;
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}
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/* Taken from the autocrop plug-in written by Tim Newsome */
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if ( !crop_guess_bgcolor (get_color_obj, get_color_func, width, height, bytes, bgcolor) )
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goto FINISH;
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switch (crop_guess_bgcolor (get_color_obj, get_color_func, width, height, bytes, has_alpha, bgcolor))
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{
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case AUTO_CROP_ALPHA:
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colors_equal_func = (ColorsEqualFunc) crop_colors_alpha;
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break;
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case AUTO_CROP_COLOR:
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colors_equal_func = (ColorsEqualFunc) crop_colors_equal;
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break;
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default:
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goto FINISH;
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}
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x1 = x2 = y1 = y2 = 0;
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/* Check how many of the top lines are uniform. */
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abort = 0;
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/* Check how many of the top lines are uniform/transparent. */
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abort = FALSE;
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for (y = 0; y < height && !abort; y++)
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for (x = 0; x < width && !abort; x++)
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{
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color = (*get_color_func) (get_color_obj, x, y);
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abort = !crop_colors_equal (bgcolor, color, bytes);
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abort = !(colors_equal_func) (bgcolor, color, bytes);
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g_free (color);
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}
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if (y == height) {
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@ -1309,35 +1329,35 @@ crop_automatic_callback (GtkWidget *w,
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}
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y1 = y - 1;
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/* Check how many of the bottom lines are uniform. */
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abort = 0;
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for (y = height - 1; y >= y1 && !abort; y--)
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/* Check how many of the bottom lines are uniform/transparent. */
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abort = FALSE;
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for (y = height - 1; y > y1 && !abort; y--)
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for (x = 0; x < width && !abort; x++)
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{
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color = (*get_color_func) (get_color_obj, x, y);
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abort = !crop_colors_equal (bgcolor, color, bytes);
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abort = !(colors_equal_func) (bgcolor, color, bytes);
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g_free (color);
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}
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y2 = y + 1;
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/* Check how many of the left lines are uniform. */
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abort = 0;
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/* Check how many of the left lines are uniform/transparent. */
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abort = FALSE;
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for (x = 0; x < width && !abort; x++)
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for (y = y1; y < width && !abort; y++)
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{
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color = (*get_color_func) (get_color_obj, x, y);
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abort = !crop_colors_equal (bgcolor, color, bytes);
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abort = !(colors_equal_func) (bgcolor, color, bytes);
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g_free (color);
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}
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x1 = x - 1;
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/* Check how many of the right lines are uniform. */
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abort = 0;
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for (x = width - 1; x >= x1 && !abort; x--)
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/* Check how many of the right lines are uniform/transparent. */
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abort = FALSE;
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for (x = width - 1; x > x1 && !abort; x--)
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for (y = y1; y < y2 && !abort; y++)
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{
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color = (*get_color_func) (get_color_obj, x, y);
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abort = !crop_colors_equal (bgcolor, color, bytes);
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abort = !(colors_equal_func) (bgcolor, color, bytes);
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g_free (color);
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}
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x2 = x + 1;
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@ -1355,59 +1375,72 @@ crop_automatic_callback (GtkWidget *w,
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return;
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}
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static int
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static AutoCropType
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crop_guess_bgcolor (GtkObject *get_color_obj,
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GetColorFunc get_color_func,
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int width,
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int height,
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int bytes,
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int has_alpha,
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guchar *color)
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{
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guchar *tl, *tr, *bl, *br;
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/* Taken from the autocrop plug-in written by Tim Newsome */
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/* Algorithm pinched from pnmcrop.
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* To guess the background, first see if 3 corners are equal.
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* Then if two are equal.
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* Otherwise average the colors.
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guchar *tl = NULL;
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guchar *tr = NULL;
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guchar *bl = NULL;
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guchar *br = NULL;
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gint i, alpha;
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for (i=0; i< bytes; i++)
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color[i] = 0;
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/* First check if there's transparency to crop. If not, guess the
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* background-color to see if at least 2 corners are equal.
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*/
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if (!(tl = (*get_color_func) (get_color_obj, 0, 0)))
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return FALSE;
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goto ERROR;
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if (!(tr = (*get_color_func) (get_color_obj, width - 1, 0)))
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return FALSE;
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goto ERROR;
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if (!(bl = (*get_color_func) (get_color_obj, 0, height - 1)))
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return FALSE;
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goto ERROR;
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if (!(br = (*get_color_func) (get_color_obj, width - 1, height - 1)))
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return FALSE;
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if (crop_colors_equal(tr, bl, bytes) && crop_colors_equal(tr, br, bytes))
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memcpy(color, tr, bytes);
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else if (crop_colors_equal(tl, bl, bytes) && crop_colors_equal(tl, br, bytes))
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memcpy(color, tl, bytes);
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else if (crop_colors_equal(tl, tr, bytes) && crop_colors_equal(tl, br, bytes))
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memcpy(color, tl, bytes);
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else if (crop_colors_equal(tl, tr, bytes) && crop_colors_equal(tl, bl, bytes))
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memcpy(color, tl, bytes);
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else if (crop_colors_equal(tl, tr, bytes) || crop_colors_equal(tl, bl, bytes) ||
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crop_colors_equal(tl, br, bytes))
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memcpy(color, tl, bytes);
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else if (crop_colors_equal(tr, bl, bytes) || crop_colors_equal(tr, bl, bytes))
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memcpy(color, tr, bytes);
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else if (crop_colors_equal(br, bl, bytes))
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memcpy(color, br, bytes);
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else
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while (bytes--) {
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color[bytes] = (tl[bytes] + tr[bytes] + bl[bytes] + br[bytes]) / 4;
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goto ERROR;
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if (has_alpha)
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{
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alpha = bytes - 1;
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if ((tl[alpha] == 0 && tr[alpha] == 0) ||
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(tl[alpha] == 0 && bl[alpha] == 0) ||
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(tr[alpha] == 0 && br[alpha] == 0) ||
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(bl[alpha] == 0 && br[alpha] == 0))
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{
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g_free (tl);
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g_free (tr);
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g_free (bl);
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g_free (br);
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return AUTO_CROP_ALPHA;
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}
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}
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if (crop_colors_equal (tl, tr, bytes) || crop_colors_equal (tl, bl, bytes))
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memcpy (color, tl, bytes);
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else if (crop_colors_equal (br, bl, bytes) || crop_colors_equal (br, tr, bytes))
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memcpy (color, br, bytes);
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else
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goto ERROR;
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g_free (tl);
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g_free (tr);
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g_free (bl);
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g_free (br);
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return AUTO_CROP_COLOR;
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return TRUE;
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ERROR:
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g_free (tl);
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g_free (tr);
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g_free (bl);
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g_free (br);
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return AUTO_CROP_NOTHING;
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}
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static int
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@ -1415,14 +1448,12 @@ crop_colors_equal (guchar *col1,
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guchar *col2,
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int bytes)
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{
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int equal = 1;
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int equal = TRUE;
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int b;
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/* Taken from the autocrop plug-in written by Tim Newsome */
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for (b = 0; b < bytes; b++) {
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if (col1[b] != col2[b]) {
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equal = 0;
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equal = FALSE;
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break;
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}
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}
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@ -1430,6 +1461,17 @@ crop_colors_equal (guchar *col1,
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return equal;
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}
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static int
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crop_colors_alpha (guchar *dummy,
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guchar *col,
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int bytes)
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{
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if (col[bytes-1] == 0)
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return TRUE;
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else
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return FALSE;
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}
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static void
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crop_close_callback (GtkWidget *w,
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gpointer client_data)
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174
app/tools/crop.c
174
app/tools/crop.c
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@ -88,8 +88,6 @@ struct _CropOptions
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GtkWidget *default_to_crop_w;
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};
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typedef guchar * (*GetColorFunc) (GtkObject *, int, int);
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/* the crop tool options */
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static CropOptions *crop_options = NULL;
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@ -126,12 +124,20 @@ static void crop_resize_callback (GtkWidget *, gpointer);
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static void crop_close_callback (GtkWidget *, gpointer);
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/* Crop area-select functions */
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static void crop_selection_callback (GtkWidget *, gpointer);
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static void crop_automatic_callback (GtkWidget *, gpointer);
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static int crop_colors_equal (guchar *col1, guchar *col2, int bytes);
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static int crop_guess_bgcolor (GtkObject *, GetColorFunc,
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int width, int height,
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int bytes, guchar *color);
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typedef enum {
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AUTO_CROP_NOTHING = 0,
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AUTO_CROP_ALPHA = 1,
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AUTO_CROP_COLOR = 2
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} AutoCropType;
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typedef guchar * (*GetColorFunc) (GtkObject *, int, int);
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typedef AutoCropType (*ColorsEqualFunc) (guchar *, guchar *, int);
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static void crop_selection_callback (GtkWidget *, gpointer);
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static void crop_automatic_callback (GtkWidget *, gpointer);
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static AutoCropType crop_guess_bgcolor (GtkObject *, GetColorFunc, int, int, int, int, guchar *);
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static int crop_colors_equal (guchar *, guchar *, int);
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static int crop_colors_alpha (guchar *, guchar *, int);
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/* Crop dialog callback funtions */
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static void crop_orig_changed (GtkWidget *, gpointer);
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@ -1240,6 +1246,7 @@ crop_selection_callback (GtkWidget *w,
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draw_core_resume (crop->core, tool);
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}
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static void
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crop_automatic_callback (GtkWidget *w,
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gpointer client_data)
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@ -1249,13 +1256,15 @@ crop_automatic_callback (GtkWidget *w,
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GDisplay * gdisp;
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GimpDrawable * active_drawable;
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GetColorFunc get_color_func;
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ColorsEqualFunc colors_equal_func;
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GtkObject *get_color_obj;
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guchar bgcolor[4] = {0, 0, 0, 0};
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gint has_alpha = FALSE;
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guchar *color;
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gint width, height, bytes;
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gint x, y, abort;
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gint x1, y1, x2, y2;
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tool = active_tool;
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crop = (Crop *) tool->private;
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gdisp = (GDisplay *) tool->gdisp_ptr;
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@ -1270,6 +1279,8 @@ crop_automatic_callback (GtkWidget *w,
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width = drawable_width (GIMP_DRAWABLE (active_drawable));
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height = drawable_height (GIMP_DRAWABLE (active_drawable));
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bytes = drawable_bytes (GIMP_DRAWABLE (active_drawable));
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if (drawable_has_alpha (GIMP_DRAWABLE (active_drawable)))
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has_alpha = TRUE;
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get_color_obj = GTK_OBJECT (active_drawable);
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get_color_func = (GetColorFunc) gimp_drawable_get_color_at;
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drawable_offsets (GIMP_DRAWABLE (active_drawable), &crop->tx1, &crop->ty1);
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@ -1280,28 +1291,37 @@ crop_automatic_callback (GtkWidget *w,
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{
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width = gdisp->gimage->width;
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height = gdisp->gimage->height;
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bytes = gimp_image_composite_bytes (gdisp->gimage);
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get_color_obj = GTK_OBJECT (gdisp->gimage);
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get_color_func = (GetColorFunc) gimp_image_get_color_at;
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/* gimp_image_get_color_at always returns an alpha value */
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bytes = 4;
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has_alpha = TRUE;
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crop->tx1 = crop->ty1 = 0;
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crop->tx2 = width;
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crop->ty2 = height;
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}
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/* Taken from the autocrop plug-in written by Tim Newsome */
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if ( !crop_guess_bgcolor (get_color_obj, get_color_func, width, height, bytes, bgcolor) )
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goto FINISH;
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switch (crop_guess_bgcolor (get_color_obj, get_color_func, width, height, bytes, has_alpha, bgcolor))
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{
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case AUTO_CROP_ALPHA:
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colors_equal_func = (ColorsEqualFunc) crop_colors_alpha;
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break;
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case AUTO_CROP_COLOR:
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colors_equal_func = (ColorsEqualFunc) crop_colors_equal;
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break;
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default:
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goto FINISH;
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}
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x1 = x2 = y1 = y2 = 0;
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/* Check how many of the top lines are uniform. */
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abort = 0;
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/* Check how many of the top lines are uniform/transparent. */
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abort = FALSE;
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for (y = 0; y < height && !abort; y++)
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for (x = 0; x < width && !abort; x++)
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{
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color = (*get_color_func) (get_color_obj, x, y);
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abort = !crop_colors_equal (bgcolor, color, bytes);
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abort = !(colors_equal_func) (bgcolor, color, bytes);
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g_free (color);
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}
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if (y == height) {
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@ -1309,35 +1329,35 @@ crop_automatic_callback (GtkWidget *w,
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}
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y1 = y - 1;
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/* Check how many of the bottom lines are uniform. */
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abort = 0;
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for (y = height - 1; y >= y1 && !abort; y--)
|
||||
/* Check how many of the bottom lines are uniform/transparent. */
|
||||
abort = FALSE;
|
||||
for (y = height - 1; y > y1 && !abort; y--)
|
||||
for (x = 0; x < width && !abort; x++)
|
||||
{
|
||||
color = (*get_color_func) (get_color_obj, x, y);
|
||||
abort = !crop_colors_equal (bgcolor, color, bytes);
|
||||
abort = !(colors_equal_func) (bgcolor, color, bytes);
|
||||
g_free (color);
|
||||
}
|
||||
y2 = y + 1;
|
||||
|
||||
/* Check how many of the left lines are uniform. */
|
||||
abort = 0;
|
||||
/* Check how many of the left lines are uniform/transparent. */
|
||||
abort = FALSE;
|
||||
for (x = 0; x < width && !abort; x++)
|
||||
for (y = y1; y < width && !abort; y++)
|
||||
{
|
||||
color = (*get_color_func) (get_color_obj, x, y);
|
||||
abort = !crop_colors_equal (bgcolor, color, bytes);
|
||||
abort = !(colors_equal_func) (bgcolor, color, bytes);
|
||||
g_free (color);
|
||||
}
|
||||
x1 = x - 1;
|
||||
|
||||
/* Check how many of the right lines are uniform. */
|
||||
abort = 0;
|
||||
for (x = width - 1; x >= x1 && !abort; x--)
|
||||
/* Check how many of the right lines are uniform/transparent. */
|
||||
abort = FALSE;
|
||||
for (x = width - 1; x > x1 && !abort; x--)
|
||||
for (y = y1; y < y2 && !abort; y++)
|
||||
{
|
||||
color = (*get_color_func) (get_color_obj, x, y);
|
||||
abort = !crop_colors_equal (bgcolor, color, bytes);
|
||||
abort = !(colors_equal_func) (bgcolor, color, bytes);
|
||||
g_free (color);
|
||||
}
|
||||
x2 = x + 1;
|
||||
|
|
@ -1355,59 +1375,72 @@ crop_automatic_callback (GtkWidget *w,
|
|||
return;
|
||||
}
|
||||
|
||||
static int
|
||||
static AutoCropType
|
||||
crop_guess_bgcolor (GtkObject *get_color_obj,
|
||||
GetColorFunc get_color_func,
|
||||
int width,
|
||||
int height,
|
||||
int bytes,
|
||||
int has_alpha,
|
||||
guchar *color)
|
||||
{
|
||||
guchar *tl, *tr, *bl, *br;
|
||||
|
||||
/* Taken from the autocrop plug-in written by Tim Newsome */
|
||||
|
||||
/* Algorithm pinched from pnmcrop.
|
||||
* To guess the background, first see if 3 corners are equal.
|
||||
* Then if two are equal.
|
||||
* Otherwise average the colors.
|
||||
guchar *tl = NULL;
|
||||
guchar *tr = NULL;
|
||||
guchar *bl = NULL;
|
||||
guchar *br = NULL;
|
||||
gint i, alpha;
|
||||
|
||||
for (i=0; i< bytes; i++)
|
||||
color[i] = 0;
|
||||
|
||||
/* First check if there's transparency to crop. If not, guess the
|
||||
* background-color to see if at least 2 corners are equal.
|
||||
*/
|
||||
|
||||
if (!(tl = (*get_color_func) (get_color_obj, 0, 0)))
|
||||
return FALSE;
|
||||
goto ERROR;
|
||||
if (!(tr = (*get_color_func) (get_color_obj, width - 1, 0)))
|
||||
return FALSE;
|
||||
goto ERROR;
|
||||
if (!(bl = (*get_color_func) (get_color_obj, 0, height - 1)))
|
||||
return FALSE;
|
||||
goto ERROR;
|
||||
if (!(br = (*get_color_func) (get_color_obj, width - 1, height - 1)))
|
||||
return FALSE;
|
||||
|
||||
if (crop_colors_equal(tr, bl, bytes) && crop_colors_equal(tr, br, bytes))
|
||||
memcpy(color, tr, bytes);
|
||||
else if (crop_colors_equal(tl, bl, bytes) && crop_colors_equal(tl, br, bytes))
|
||||
memcpy(color, tl, bytes);
|
||||
else if (crop_colors_equal(tl, tr, bytes) && crop_colors_equal(tl, br, bytes))
|
||||
memcpy(color, tl, bytes);
|
||||
else if (crop_colors_equal(tl, tr, bytes) && crop_colors_equal(tl, bl, bytes))
|
||||
memcpy(color, tl, bytes);
|
||||
else if (crop_colors_equal(tl, tr, bytes) || crop_colors_equal(tl, bl, bytes) ||
|
||||
crop_colors_equal(tl, br, bytes))
|
||||
memcpy(color, tl, bytes);
|
||||
else if (crop_colors_equal(tr, bl, bytes) || crop_colors_equal(tr, bl, bytes))
|
||||
memcpy(color, tr, bytes);
|
||||
else if (crop_colors_equal(br, bl, bytes))
|
||||
memcpy(color, br, bytes);
|
||||
else
|
||||
while (bytes--) {
|
||||
color[bytes] = (tl[bytes] + tr[bytes] + bl[bytes] + br[bytes]) / 4;
|
||||
goto ERROR;
|
||||
|
||||
if (has_alpha)
|
||||
{
|
||||
alpha = bytes - 1;
|
||||
if ((tl[alpha] == 0 && tr[alpha] == 0) ||
|
||||
(tl[alpha] == 0 && bl[alpha] == 0) ||
|
||||
(tr[alpha] == 0 && br[alpha] == 0) ||
|
||||
(bl[alpha] == 0 && br[alpha] == 0))
|
||||
{
|
||||
g_free (tl);
|
||||
g_free (tr);
|
||||
g_free (bl);
|
||||
g_free (br);
|
||||
return AUTO_CROP_ALPHA;
|
||||
}
|
||||
}
|
||||
|
||||
if (crop_colors_equal (tl, tr, bytes) || crop_colors_equal (tl, bl, bytes))
|
||||
memcpy (color, tl, bytes);
|
||||
else if (crop_colors_equal (br, bl, bytes) || crop_colors_equal (br, tr, bytes))
|
||||
memcpy (color, br, bytes);
|
||||
else
|
||||
goto ERROR;
|
||||
|
||||
g_free (tl);
|
||||
g_free (tr);
|
||||
g_free (bl);
|
||||
g_free (br);
|
||||
return AUTO_CROP_COLOR;
|
||||
|
||||
return TRUE;
|
||||
ERROR:
|
||||
g_free (tl);
|
||||
g_free (tr);
|
||||
g_free (bl);
|
||||
g_free (br);
|
||||
return AUTO_CROP_NOTHING;
|
||||
}
|
||||
|
||||
static int
|
||||
|
|
@ -1415,14 +1448,12 @@ crop_colors_equal (guchar *col1,
|
|||
guchar *col2,
|
||||
int bytes)
|
||||
{
|
||||
int equal = 1;
|
||||
int equal = TRUE;
|
||||
int b;
|
||||
|
||||
/* Taken from the autocrop plug-in written by Tim Newsome */
|
||||
|
||||
for (b = 0; b < bytes; b++) {
|
||||
if (col1[b] != col2[b]) {
|
||||
equal = 0;
|
||||
equal = FALSE;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
|
@ -1430,6 +1461,17 @@ crop_colors_equal (guchar *col1,
|
|||
return equal;
|
||||
}
|
||||
|
||||
static int
|
||||
crop_colors_alpha (guchar *dummy,
|
||||
guchar *col,
|
||||
int bytes)
|
||||
{
|
||||
if (col[bytes-1] == 0)
|
||||
return TRUE;
|
||||
else
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
static void
|
||||
crop_close_callback (GtkWidget *w,
|
||||
gpointer client_data)
|
||||
|
|
|
|||
|
|
@ -88,8 +88,6 @@ struct _CropOptions
|
|||
GtkWidget *default_to_crop_w;
|
||||
};
|
||||
|
||||
typedef guchar * (*GetColorFunc) (GtkObject *, int, int);
|
||||
|
||||
/* the crop tool options */
|
||||
static CropOptions *crop_options = NULL;
|
||||
|
||||
|
|
@ -126,12 +124,20 @@ static void crop_resize_callback (GtkWidget *, gpointer);
|
|||
static void crop_close_callback (GtkWidget *, gpointer);
|
||||
|
||||
/* Crop area-select functions */
|
||||
static void crop_selection_callback (GtkWidget *, gpointer);
|
||||
static void crop_automatic_callback (GtkWidget *, gpointer);
|
||||
static int crop_colors_equal (guchar *col1, guchar *col2, int bytes);
|
||||
static int crop_guess_bgcolor (GtkObject *, GetColorFunc,
|
||||
int width, int height,
|
||||
int bytes, guchar *color);
|
||||
typedef enum {
|
||||
AUTO_CROP_NOTHING = 0,
|
||||
AUTO_CROP_ALPHA = 1,
|
||||
AUTO_CROP_COLOR = 2
|
||||
} AutoCropType;
|
||||
|
||||
typedef guchar * (*GetColorFunc) (GtkObject *, int, int);
|
||||
typedef AutoCropType (*ColorsEqualFunc) (guchar *, guchar *, int);
|
||||
|
||||
static void crop_selection_callback (GtkWidget *, gpointer);
|
||||
static void crop_automatic_callback (GtkWidget *, gpointer);
|
||||
static AutoCropType crop_guess_bgcolor (GtkObject *, GetColorFunc, int, int, int, int, guchar *);
|
||||
static int crop_colors_equal (guchar *, guchar *, int);
|
||||
static int crop_colors_alpha (guchar *, guchar *, int);
|
||||
|
||||
/* Crop dialog callback funtions */
|
||||
static void crop_orig_changed (GtkWidget *, gpointer);
|
||||
|
|
@ -1240,6 +1246,7 @@ crop_selection_callback (GtkWidget *w,
|
|||
draw_core_resume (crop->core, tool);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
crop_automatic_callback (GtkWidget *w,
|
||||
gpointer client_data)
|
||||
|
|
@ -1249,13 +1256,15 @@ crop_automatic_callback (GtkWidget *w,
|
|||
GDisplay * gdisp;
|
||||
GimpDrawable * active_drawable;
|
||||
GetColorFunc get_color_func;
|
||||
ColorsEqualFunc colors_equal_func;
|
||||
GtkObject *get_color_obj;
|
||||
guchar bgcolor[4] = {0, 0, 0, 0};
|
||||
gint has_alpha = FALSE;
|
||||
guchar *color;
|
||||
gint width, height, bytes;
|
||||
gint x, y, abort;
|
||||
gint x1, y1, x2, y2;
|
||||
|
||||
|
||||
tool = active_tool;
|
||||
crop = (Crop *) tool->private;
|
||||
gdisp = (GDisplay *) tool->gdisp_ptr;
|
||||
|
|
@ -1270,6 +1279,8 @@ crop_automatic_callback (GtkWidget *w,
|
|||
width = drawable_width (GIMP_DRAWABLE (active_drawable));
|
||||
height = drawable_height (GIMP_DRAWABLE (active_drawable));
|
||||
bytes = drawable_bytes (GIMP_DRAWABLE (active_drawable));
|
||||
if (drawable_has_alpha (GIMP_DRAWABLE (active_drawable)))
|
||||
has_alpha = TRUE;
|
||||
get_color_obj = GTK_OBJECT (active_drawable);
|
||||
get_color_func = (GetColorFunc) gimp_drawable_get_color_at;
|
||||
drawable_offsets (GIMP_DRAWABLE (active_drawable), &crop->tx1, &crop->ty1);
|
||||
|
|
@ -1280,28 +1291,37 @@ crop_automatic_callback (GtkWidget *w,
|
|||
{
|
||||
width = gdisp->gimage->width;
|
||||
height = gdisp->gimage->height;
|
||||
bytes = gimp_image_composite_bytes (gdisp->gimage);
|
||||
get_color_obj = GTK_OBJECT (gdisp->gimage);
|
||||
get_color_func = (GetColorFunc) gimp_image_get_color_at;
|
||||
/* gimp_image_get_color_at always returns an alpha value */
|
||||
bytes = 4;
|
||||
has_alpha = TRUE;
|
||||
crop->tx1 = crop->ty1 = 0;
|
||||
crop->tx2 = width;
|
||||
crop->ty2 = height;
|
||||
}
|
||||
|
||||
/* Taken from the autocrop plug-in written by Tim Newsome */
|
||||
|
||||
if ( !crop_guess_bgcolor (get_color_obj, get_color_func, width, height, bytes, bgcolor) )
|
||||
goto FINISH;
|
||||
switch (crop_guess_bgcolor (get_color_obj, get_color_func, width, height, bytes, has_alpha, bgcolor))
|
||||
{
|
||||
case AUTO_CROP_ALPHA:
|
||||
colors_equal_func = (ColorsEqualFunc) crop_colors_alpha;
|
||||
break;
|
||||
case AUTO_CROP_COLOR:
|
||||
colors_equal_func = (ColorsEqualFunc) crop_colors_equal;
|
||||
break;
|
||||
default:
|
||||
goto FINISH;
|
||||
}
|
||||
|
||||
x1 = x2 = y1 = y2 = 0;
|
||||
|
||||
/* Check how many of the top lines are uniform. */
|
||||
abort = 0;
|
||||
|
||||
/* Check how many of the top lines are uniform/transparent. */
|
||||
abort = FALSE;
|
||||
for (y = 0; y < height && !abort; y++)
|
||||
for (x = 0; x < width && !abort; x++)
|
||||
{
|
||||
color = (*get_color_func) (get_color_obj, x, y);
|
||||
abort = !crop_colors_equal (bgcolor, color, bytes);
|
||||
abort = !(colors_equal_func) (bgcolor, color, bytes);
|
||||
g_free (color);
|
||||
}
|
||||
if (y == height) {
|
||||
|
|
@ -1309,35 +1329,35 @@ crop_automatic_callback (GtkWidget *w,
|
|||
}
|
||||
y1 = y - 1;
|
||||
|
||||
/* Check how many of the bottom lines are uniform. */
|
||||
abort = 0;
|
||||
for (y = height - 1; y >= y1 && !abort; y--)
|
||||
/* Check how many of the bottom lines are uniform/transparent. */
|
||||
abort = FALSE;
|
||||
for (y = height - 1; y > y1 && !abort; y--)
|
||||
for (x = 0; x < width && !abort; x++)
|
||||
{
|
||||
color = (*get_color_func) (get_color_obj, x, y);
|
||||
abort = !crop_colors_equal (bgcolor, color, bytes);
|
||||
abort = !(colors_equal_func) (bgcolor, color, bytes);
|
||||
g_free (color);
|
||||
}
|
||||
y2 = y + 1;
|
||||
|
||||
/* Check how many of the left lines are uniform. */
|
||||
abort = 0;
|
||||
/* Check how many of the left lines are uniform/transparent. */
|
||||
abort = FALSE;
|
||||
for (x = 0; x < width && !abort; x++)
|
||||
for (y = y1; y < width && !abort; y++)
|
||||
{
|
||||
color = (*get_color_func) (get_color_obj, x, y);
|
||||
abort = !crop_colors_equal (bgcolor, color, bytes);
|
||||
abort = !(colors_equal_func) (bgcolor, color, bytes);
|
||||
g_free (color);
|
||||
}
|
||||
x1 = x - 1;
|
||||
|
||||
/* Check how many of the right lines are uniform. */
|
||||
abort = 0;
|
||||
for (x = width - 1; x >= x1 && !abort; x--)
|
||||
/* Check how many of the right lines are uniform/transparent. */
|
||||
abort = FALSE;
|
||||
for (x = width - 1; x > x1 && !abort; x--)
|
||||
for (y = y1; y < y2 && !abort; y++)
|
||||
{
|
||||
color = (*get_color_func) (get_color_obj, x, y);
|
||||
abort = !crop_colors_equal (bgcolor, color, bytes);
|
||||
abort = !(colors_equal_func) (bgcolor, color, bytes);
|
||||
g_free (color);
|
||||
}
|
||||
x2 = x + 1;
|
||||
|
|
@ -1355,59 +1375,72 @@ crop_automatic_callback (GtkWidget *w,
|
|||
return;
|
||||
}
|
||||
|
||||
static int
|
||||
static AutoCropType
|
||||
crop_guess_bgcolor (GtkObject *get_color_obj,
|
||||
GetColorFunc get_color_func,
|
||||
int width,
|
||||
int height,
|
||||
int bytes,
|
||||
int has_alpha,
|
||||
guchar *color)
|
||||
{
|
||||
guchar *tl, *tr, *bl, *br;
|
||||
|
||||
/* Taken from the autocrop plug-in written by Tim Newsome */
|
||||
|
||||
/* Algorithm pinched from pnmcrop.
|
||||
* To guess the background, first see if 3 corners are equal.
|
||||
* Then if two are equal.
|
||||
* Otherwise average the colors.
|
||||
guchar *tl = NULL;
|
||||
guchar *tr = NULL;
|
||||
guchar *bl = NULL;
|
||||
guchar *br = NULL;
|
||||
gint i, alpha;
|
||||
|
||||
for (i=0; i< bytes; i++)
|
||||
color[i] = 0;
|
||||
|
||||
/* First check if there's transparency to crop. If not, guess the
|
||||
* background-color to see if at least 2 corners are equal.
|
||||
*/
|
||||
|
||||
if (!(tl = (*get_color_func) (get_color_obj, 0, 0)))
|
||||
return FALSE;
|
||||
goto ERROR;
|
||||
if (!(tr = (*get_color_func) (get_color_obj, width - 1, 0)))
|
||||
return FALSE;
|
||||
goto ERROR;
|
||||
if (!(bl = (*get_color_func) (get_color_obj, 0, height - 1)))
|
||||
return FALSE;
|
||||
goto ERROR;
|
||||
if (!(br = (*get_color_func) (get_color_obj, width - 1, height - 1)))
|
||||
return FALSE;
|
||||
|
||||
if (crop_colors_equal(tr, bl, bytes) && crop_colors_equal(tr, br, bytes))
|
||||
memcpy(color, tr, bytes);
|
||||
else if (crop_colors_equal(tl, bl, bytes) && crop_colors_equal(tl, br, bytes))
|
||||
memcpy(color, tl, bytes);
|
||||
else if (crop_colors_equal(tl, tr, bytes) && crop_colors_equal(tl, br, bytes))
|
||||
memcpy(color, tl, bytes);
|
||||
else if (crop_colors_equal(tl, tr, bytes) && crop_colors_equal(tl, bl, bytes))
|
||||
memcpy(color, tl, bytes);
|
||||
else if (crop_colors_equal(tl, tr, bytes) || crop_colors_equal(tl, bl, bytes) ||
|
||||
crop_colors_equal(tl, br, bytes))
|
||||
memcpy(color, tl, bytes);
|
||||
else if (crop_colors_equal(tr, bl, bytes) || crop_colors_equal(tr, bl, bytes))
|
||||
memcpy(color, tr, bytes);
|
||||
else if (crop_colors_equal(br, bl, bytes))
|
||||
memcpy(color, br, bytes);
|
||||
else
|
||||
while (bytes--) {
|
||||
color[bytes] = (tl[bytes] + tr[bytes] + bl[bytes] + br[bytes]) / 4;
|
||||
goto ERROR;
|
||||
|
||||
if (has_alpha)
|
||||
{
|
||||
alpha = bytes - 1;
|
||||
if ((tl[alpha] == 0 && tr[alpha] == 0) ||
|
||||
(tl[alpha] == 0 && bl[alpha] == 0) ||
|
||||
(tr[alpha] == 0 && br[alpha] == 0) ||
|
||||
(bl[alpha] == 0 && br[alpha] == 0))
|
||||
{
|
||||
g_free (tl);
|
||||
g_free (tr);
|
||||
g_free (bl);
|
||||
g_free (br);
|
||||
return AUTO_CROP_ALPHA;
|
||||
}
|
||||
}
|
||||
|
||||
if (crop_colors_equal (tl, tr, bytes) || crop_colors_equal (tl, bl, bytes))
|
||||
memcpy (color, tl, bytes);
|
||||
else if (crop_colors_equal (br, bl, bytes) || crop_colors_equal (br, tr, bytes))
|
||||
memcpy (color, br, bytes);
|
||||
else
|
||||
goto ERROR;
|
||||
|
||||
g_free (tl);
|
||||
g_free (tr);
|
||||
g_free (bl);
|
||||
g_free (br);
|
||||
return AUTO_CROP_COLOR;
|
||||
|
||||
return TRUE;
|
||||
ERROR:
|
||||
g_free (tl);
|
||||
g_free (tr);
|
||||
g_free (bl);
|
||||
g_free (br);
|
||||
return AUTO_CROP_NOTHING;
|
||||
}
|
||||
|
||||
static int
|
||||
|
|
@ -1415,14 +1448,12 @@ crop_colors_equal (guchar *col1,
|
|||
guchar *col2,
|
||||
int bytes)
|
||||
{
|
||||
int equal = 1;
|
||||
int equal = TRUE;
|
||||
int b;
|
||||
|
||||
/* Taken from the autocrop plug-in written by Tim Newsome */
|
||||
|
||||
for (b = 0; b < bytes; b++) {
|
||||
if (col1[b] != col2[b]) {
|
||||
equal = 0;
|
||||
equal = FALSE;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
|
@ -1430,6 +1461,17 @@ crop_colors_equal (guchar *col1,
|
|||
return equal;
|
||||
}
|
||||
|
||||
static int
|
||||
crop_colors_alpha (guchar *dummy,
|
||||
guchar *col,
|
||||
int bytes)
|
||||
{
|
||||
if (col[bytes-1] == 0)
|
||||
return TRUE;
|
||||
else
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
static void
|
||||
crop_close_callback (GtkWidget *w,
|
||||
gpointer client_data)
|
||||
|
|
|
|||
Loading…
Reference in New Issue