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8d6c335f8f
2000-12-29 Michael Natterer <mitch@gimp.org> * app/Makefile.am * app/channel_pvt.h * app/drawable_pvt.h * app/gdisplayF.h * app/gimpdrawableP.h * app/gimpimageP.h * app/layer_pvt.h * app/toolsF.h: removed these files. * app/apptypes.h * tools/pdbgen/enums.pl: added tons of opaque typedefs and enums. * tools/pdbgen/pdb/brush_select.pdb * tools/pdbgen/pdb/brushes.pdb * tools/pdbgen/pdb/channel.pdb * tools/pdbgen/pdb/color.pdb * tools/pdbgen/pdb/convert.pdb * tools/pdbgen/pdb/display.pdb * tools/pdbgen/pdb/drawable.pdb * tools/pdbgen/pdb/fileops.pdb * tools/pdbgen/pdb/gradient_select.pdb * tools/pdbgen/pdb/gradients.pdb * tools/pdbgen/pdb/help.pdb * tools/pdbgen/pdb/image.pdb * tools/pdbgen/pdb/layer.pdb * tools/pdbgen/pdb/pattern_select.pdb * tools/pdbgen/pdb/patterns.pdb * tools/pdbgen/pdb/selection.pdb * tools/pdbgen/pdb/tools.pdb * app/*: chainsaw #include cleanup: - Never (never!!) include stuff in header files except where we need access to structures' contents (like derived objects). - Added prototypes and proper formating in many files. - The #include order in *all* *.c files is as follows: #include "config.h" #include <system stuff> #include <gtk/gtk.h> #include "apptypes.h" #include "gimp stuff" #include "libgimp stuff" #include "libgimp/gimpintl.h" By following this scheme we can easily see a file's dependencies from it's #include's and can grep for the inclusion to find out where a file is used. * tools/pdbgen/app.pl: changed to follow the include scheme above. * libgimp/Makefile.am * libgimp/gimpuitypes.h: new file, included from libgimp/gimpui.h and from app/apptypes.h. * libgimp/gimpcolorbutton.[ch] * libgimp/gimpdialog.[ch] * libgimp/gimphelpui.[ch] * libgimp/gimpparasite.[ch] * libgimp/gimppatheditor.[ch] * libgimp/gimpprotocol.c * libgimp/gimpquerybox.[ch] * libgimp/gimpsizeentry.[ch] * libgimp/gimptypes.h * libgimp/gimpui.h * libgimp/gimpunit.h * libgimp/gimpunitmenu.[ch] * libgimp/gimpwidgets.[ch]: changed accordingly. * plug-ins/FractalExplorer/Dialogs.c * plug-ins/gdyntext/message_window.c * plug-ins/imagemap/imap_default_dialog.c * plug-ins/imagemap/imap_file.c: these files used to include "libgimp/gimpui.h" without including "libgimp/gimp.h". This is no longer possible because the libgimpui headers don't inlcude "libgimp/gimpunit.h" any more.
318 lines
7.9 KiB
C
318 lines
7.9 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <gtk/gtk.h>
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#include "apptypes.h"
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#include "appenv.h"
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#include "drawable.h"
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#include "gdisplay.h"
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#include "gimage.h"
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#include "gimage_mask.h"
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#include "histogramwidget.h"
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#include "tile_manager.h"
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#include "libgimp/gimpmath.h"
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#define WAITING 0
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#define WORKING 1
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#define WORK_DELAY 1
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#define HISTOGRAM_MASK GDK_EXPOSURE_MASK | \
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GDK_BUTTON_PRESS_MASK | \
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GDK_BUTTON_RELEASE_MASK | \
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GDK_BUTTON1_MOTION_MASK
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#define HISTOGRAM 0x1
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#define RANGE 0x2
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#define ALL 0xF
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enum
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{
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RANGE_CHANGED,
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LAST_SIGNAL
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};
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static guint histogram_widget_signals[LAST_SIGNAL];
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static void histogram_widget_class_init (HistogramWidgetClass *klass);
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static void histogram_widget_init (HistogramWidget *histogram);
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/**************************/
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/* Function definitions */
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GtkType
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histogram_widget_get_type (void)
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{
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static GtkType histogram_widet_type = 0;
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if (! histogram_widet_type)
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{
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static const GtkTypeInfo info =
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{
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"HistogramWidget",
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sizeof (HistogramWidget),
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sizeof (HistogramWidgetClass),
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(GtkClassInitFunc) histogram_widget_class_init,
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(GtkObjectInitFunc) histogram_widget_init,
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NULL, NULL
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};
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histogram_widet_type =
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gtk_type_unique (gtk_drawing_area_get_type (), &info);
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}
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return histogram_widet_type;
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}
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static void
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histogram_widget_class_init (HistogramWidgetClass *klass)
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{
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GtkObjectClass *object_class;
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object_class = GTK_OBJECT_CLASS (klass);
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histogram_widget_signals[RANGE_CHANGED] =
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gtk_signal_new ("range_changed",
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GTK_RUN_FIRST,
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object_class->type,
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GTK_SIGNAL_OFFSET (HistogramWidgetClass, range_changed),
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gtk_marshal_NONE__INT_INT,
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GTK_TYPE_NONE, 2,
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GTK_TYPE_INT,
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GTK_TYPE_INT);
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gtk_object_class_add_signals (GTK_OBJECT_CLASS (klass),
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histogram_widget_signals, LAST_SIGNAL);
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klass->range_changed = NULL;
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}
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static void
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histogram_widget_init (HistogramWidget *histogram)
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{
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histogram->histogram = NULL;
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histogram->channel = GIMP_HISTOGRAM_VALUE;
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histogram->start = 0;
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histogram->end = 255;
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}
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static void
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histogram_widget_draw (HistogramWidget *histogram,
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gint update)
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{
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gdouble max;
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gdouble v;
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gint i, x, y;
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gint x1, x2;
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gint width, height;
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width = GTK_WIDGET (histogram)->allocation.width - 2;
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height = GTK_WIDGET (histogram)->allocation.height - 2;
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if (update & HISTOGRAM)
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{
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/* find the maximum value */
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max = gimp_histogram_get_maximum (histogram->histogram,
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histogram->channel);
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if (max > 0.0)
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max = log (max);
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else
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max = 1.0;
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/* clear the histogram */
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gdk_window_clear (GTK_WIDGET (histogram)->window);
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/* Draw the axis */
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gdk_draw_line (GTK_WIDGET (histogram)->window,
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GTK_WIDGET (histogram)->style->black_gc,
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1, height + 1, width, height + 1);
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/* Draw the spikes */
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for (i = 0; i < 256; i++)
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{
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x = (width * i) / 256 + 1;
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v = gimp_histogram_get_value (histogram->histogram,
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histogram->channel, i);
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if (v > 0.0)
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y = (int) ((height * log (v)) / max);
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else
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y = 0;
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gdk_draw_line (GTK_WIDGET (histogram)->window,
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GTK_WIDGET (histogram)->style->black_gc,
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x, height + 1,
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x, height + 1 - y);
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}
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}
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if ((update & RANGE) && histogram->start >= 0)
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{
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x1 = (width * MIN (histogram->start, histogram->end)) / 256 + 1;
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x2 = (width * MAX (histogram->start, histogram->end)) / 256 + 1;
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gdk_gc_set_function (GTK_WIDGET (histogram)->style->black_gc, GDK_INVERT);
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gdk_draw_rectangle (GTK_WIDGET (histogram)->window,
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GTK_WIDGET (histogram)->style->black_gc, TRUE,
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x1, 1, (x2 - x1) + 1, height);
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gdk_gc_set_function (GTK_WIDGET (histogram)->style->black_gc, GDK_COPY);
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}
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}
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static gint
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histogram_widget_events (HistogramWidget *histogram,
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GdkEvent *event)
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{
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GdkEventButton *bevent;
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GdkEventMotion *mevent;
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gint width;
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switch (event->type)
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{
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case GDK_EXPOSE:
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histogram_widget_draw (histogram, ALL);
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break;
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case GDK_BUTTON_PRESS:
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bevent = (GdkEventButton *) event;
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if (bevent->button != 1)
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break;
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gdk_pointer_grab (GTK_WIDGET (histogram)->window, FALSE,
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GDK_BUTTON_RELEASE_MASK | GDK_BUTTON1_MOTION_MASK,
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NULL, NULL, bevent->time);
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width = GTK_WIDGET (histogram)->allocation.width - 2;
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histogram_widget_draw (histogram, RANGE);
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histogram->start = CLAMP ((((bevent->x - 1) * 256) / width), 0, 255);
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histogram->end = histogram->start;
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histogram_widget_draw (histogram, RANGE);
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break;
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case GDK_BUTTON_RELEASE:
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bevent = (GdkEventButton *) event;
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gdk_pointer_ungrab (bevent->time);
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gtk_signal_emit (GTK_OBJECT(histogram),
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histogram_widget_signals[RANGE_CHANGED],
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MIN (histogram->start, histogram->end),
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MAX (histogram->start, histogram->end));
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break;
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case GDK_MOTION_NOTIFY:
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mevent = (GdkEventMotion *) event;
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width = GTK_WIDGET (histogram)->allocation.width - 2;
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histogram_widget_draw (histogram, RANGE);
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histogram->start = CLAMP ((((mevent->x - 1) * 256) / width), 0, 255);
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histogram_widget_draw (histogram, RANGE);
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break;
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default:
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break;
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}
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return FALSE;
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}
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HistogramWidget *
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histogram_widget_new (gint width,
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gint height)
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{
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HistogramWidget *histogram;
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histogram = HISTOGRAM_WIDGET (gtk_type_new (HISTOGRAM_WIDGET_TYPE));
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gtk_drawing_area_size (GTK_DRAWING_AREA (histogram), width + 2, height + 2);
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gtk_widget_set_events (GTK_WIDGET (histogram), HISTOGRAM_MASK);
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gtk_signal_connect (GTK_OBJECT (histogram), "event",
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GTK_SIGNAL_FUNC (histogram_widget_events),
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histogram);
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return histogram;
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}
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void
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histogram_widget_update (HistogramWidget *histogram_widget,
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GimpHistogram *hist)
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{
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histogram_widget->histogram = hist;
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if (!hist)
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return;
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if (histogram_widget->channel >= gimp_histogram_nchannels (hist))
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histogram_widget_channel (histogram_widget, 0);
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/* Make sure the histogram is updated */
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gtk_widget_draw (GTK_WIDGET (histogram_widget), NULL);
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/* Give a range callback */
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gtk_signal_emit (GTK_OBJECT (histogram_widget),
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histogram_widget_signals[RANGE_CHANGED],
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MIN (histogram_widget->start, histogram_widget->end),
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MAX (histogram_widget->start, histogram_widget->end));
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}
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void
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histogram_widget_range (HistogramWidget *histogram,
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gint start,
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gint end)
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{
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histogram_widget_draw (histogram, RANGE);
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histogram->start = start;
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histogram->end = end;
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histogram_widget_draw (histogram, RANGE);
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}
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void
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histogram_widget_channel (HistogramWidget *histogram,
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int channel)
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{
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histogram->channel = channel;
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histogram_widget_draw (histogram, ALL);
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/* Give a range callback */
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gtk_signal_emit (GTK_OBJECT (histogram),
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histogram_widget_signals[RANGE_CHANGED],
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MIN (histogram->start, histogram->end),
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MAX (histogram->start, histogram->end));
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}
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GimpHistogram *
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histogram_widget_histogram (HistogramWidget *histogram)
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{
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return histogram->histogram;
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}
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