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authorMattia Rizzolo <mattia@mapreri.org>2014-10-03 14:05:01 +0000
committerMattia Rizzolo <mattia@mapreri.org>2014-10-03 14:05:01 +0000
commite7e90b72fd3161c5d55fed49e100781dfa3e9408 (patch)
tree67cfcfae6b9a9e15701a332dfacbe0ca6440f16c /frontend/xsane-gamma.c
parent2d113e8792747151bf5d830f1a1485f2f951f940 (diff)
Imported Upstream version 0.84upstream/0.84
Diffstat (limited to 'frontend/xsane-gamma.c')
-rw-r--r--frontend/xsane-gamma.c1541
1 files changed, 0 insertions, 1541 deletions
diff --git a/frontend/xsane-gamma.c b/frontend/xsane-gamma.c
deleted file mode 100644
index 90573f5..0000000
--- a/frontend/xsane-gamma.c
+++ /dev/null
@@ -1,1541 +0,0 @@
-/* xsane -- a graphical (X11, gtk) scanner-oriented SANE frontend
-
- xsane-gamma.c
-
- Oliver Rauch <Oliver.Rauch@Wolfsburg.DE>
- Copyright (C) 1998-2000 Oliver Rauch
- This file is part of the XSANE package.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-#include "xsane.h"
-#include "xsane-front-gtk.h"
-#include "xsane-back-gtk.h"
-#include "xsane-preferences.h"
-#include "xsane-preview.h"
-#include "xsane-save.h"
-
-#ifdef HAVE_LIBPNG
-#ifdef HAVE_LIBZ
-#include <png.h>
-#include <zlib.h>
-#endif
-#endif
-
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-/* forward declarations: */
-
-static void xsane_bound_double(double *value, double min, double max);
-void xsane_clear_histogram(XsanePixmap *hist);
-static void xsane_draw_histogram_with_points(XsanePixmap *hist, int invert,
- SANE_Int *count, SANE_Int *count_red, SANE_Int *count_green, SANE_Int *count_blue,
- int show_red, int show_green, int show_blue, int show_inten, double scale);
-static void xsane_draw_histogram_with_lines(XsanePixmap *hist, int invert,
- SANE_Int *count, SANE_Int *count_red, SANE_Int *count_green, SANE_Int *count_blue,
- int show_red, int show_green, int show_blue, int show_inten, double scale);
-void xsane_draw_slider_level(XsaneSlider *slider);
-static void xsane_set_slider(XsaneSlider *slider, double min, double mid, double max);
-void xsane_update_slider(XsaneSlider *slider);
-void xsane_update_sliders(void);
-static gint xsane_slider_callback(GtkWidget *widget, GdkEvent *event, XsaneSlider *slider);
-void xsane_create_slider(XsaneSlider *slider);
-void xsane_create_histogram(GtkWidget *parent, const char *title, int width, int height, XsanePixmap *hist);
-static void xsane_calculate_auto_enhancement(int negative,
- SANE_Int *count_raw, SANE_Int *count_raw_red, SANE_Int *count_raw_green, SANE_Int *count_raw_blue);
-void xsane_calculate_histogram(void);
-void xsane_update_histogram(void);
-void xsane_histogram_toggle_button_callback(GtkWidget *widget, gpointer data);
-void xsane_create_gamma_curve(SANE_Int *gammadata, int negative, double gamma,
- double brightness, double contrast, int numbers, int maxout);
-void xsane_update_gamma(void);
-static void xsane_enhancement_update(void);
-static void xsane_gamma_to_histogram(double *min, double *mid, double *max,
- double contrast, double brightness, double gamma);
-void xsane_enhancement_by_gamma(void);
-void xsane_enhancement_restore_default(void);
-void xsane_enhancement_restore(void);
-void xsane_enhancement_store(void);
-static void xsane_histogram_to_gamma(XsaneSlider *slider, double *contrast, double *brightness, double *gamma);
-void xsane_enhancement_by_histogram(void);
-static gint xsane_histogram_win_delete(GtkWidget *widget, gpointer data);
-void xsane_create_histogram_dialog(const char *devicetext);
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-static void xsane_bound_double(double *value, double min, double max)
-{
- if (*value < min)
- {
- *value = min;
- }
-
- if (*value > max)
- {
- *value = max;
- }
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_clear_histogram(XsanePixmap *hist)
-{
- GdkRectangle rect;
-
- if(hist->pixmap)
- {
- rect.x=0;
- rect.y=0;
- rect.width = HIST_WIDTH;
- rect.height = HIST_HEIGHT;
-
- gdk_draw_rectangle(hist->pixmap, xsane.gc_backg, TRUE, 0, 0, HIST_WIDTH, HIST_HEIGHT);
- gtk_widget_draw(hist->pixmapwid, &rect);
- }
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-static void xsane_draw_histogram_with_points(XsanePixmap *hist, int invert,
- SANE_Int *count, SANE_Int *count_red, SANE_Int *count_green, SANE_Int *count_blue,
- int show_red, int show_green, int show_blue, int show_inten, double scale)
-{
- GdkRectangle rect;
- int i;
- int inten, red, green, blue;
- int colval;
-
-#define XD 1
-#define YD 2
-
- if(hist->pixmap)
- {
- rect.x=0;
- rect.y=0;
- rect.width = HIST_WIDTH;
- rect.height = HIST_HEIGHT;
-
- gdk_draw_rectangle(hist->pixmap, xsane.gc_backg, TRUE, 0, 0, HIST_WIDTH, HIST_HEIGHT);
-
- red = 0;
- green = 0;
- blue = 0;
-
- for (i=0; i < HIST_WIDTH; i++)
- {
- if (invert)
- {
- colval = 255-i;
- }
- else
- {
- colval = i;
- }
-
- inten = show_inten * count[colval] * scale;
-
- if (xsane.xsane_color)
- {
- red = show_red * count_red[colval] * scale;
- green = show_green * count_green[colval] * scale;
- blue = show_blue * count_blue[colval] * scale;
- }
-
- if (inten > HIST_HEIGHT)
- inten = HIST_HEIGHT;
-
- if (red > HIST_HEIGHT)
- red = HIST_HEIGHT;
-
- if (green > HIST_HEIGHT)
- green = HIST_HEIGHT;
-
- if (blue > HIST_HEIGHT)
- blue = HIST_HEIGHT;
-
-
- gdk_draw_rectangle(hist->pixmap, xsane.gc_red, TRUE, i, HIST_HEIGHT - red, XD, YD);
- gdk_draw_rectangle(hist->pixmap, xsane.gc_green, TRUE, i, HIST_HEIGHT - green, XD, YD);
- gdk_draw_rectangle(hist->pixmap, xsane.gc_blue, TRUE, i, HIST_HEIGHT - blue, XD, YD);
- gdk_draw_rectangle(hist->pixmap, xsane.gc_black, TRUE, i, HIST_HEIGHT - inten, XD, YD);
- }
-
- gtk_widget_draw(hist->pixmapwid, &rect);
- }
-}
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-static void xsane_draw_histogram_with_lines(XsanePixmap *hist, int invert,
- SANE_Int *count, SANE_Int *count_red, SANE_Int *count_green, SANE_Int *count_blue,
- int show_red, int show_green, int show_blue, int show_inten, double scale)
-{
- GdkRectangle rect;
- int i, j, k;
- int inten, red, green, blue;
- int inten0=0, red0=0, green0=0, blue0=0;
- int val[4];
- int val2[4];
- int color[4];
- int val_swap;
- int color_swap;
- int colval;
-
- if (hist->pixmap)
- {
- rect.x=0;
- rect.y=0;
- rect.width = HIST_WIDTH;
- rect.height = HIST_HEIGHT;
-
- gdk_draw_rectangle(hist->pixmap, xsane.gc_backg, TRUE, 0, 0, HIST_WIDTH, HIST_HEIGHT);
-
- red = 0;
- green = 0;
- blue = 0;
-
- for (i=0; i < HIST_WIDTH; i++)
- {
- if (invert)
- {
- colval = 255-i;
- }
- else
- {
- colval = i;
- }
-
- inten = show_inten * count[colval] * scale;
-
- if (xsane.xsane_color)
- {
- red = show_red * count_red[colval] * scale;
- green = show_green * count_green[colval] * scale;
- blue = show_blue * count_blue[colval] * scale;
- }
-
- if (inten > HIST_HEIGHT)
- inten = HIST_HEIGHT;
-
- if (red > HIST_HEIGHT)
- red = HIST_HEIGHT;
-
- if (green > HIST_HEIGHT)
- green = HIST_HEIGHT;
-
- if (blue > HIST_HEIGHT)
- blue = HIST_HEIGHT;
-
- val[0] = red; color[0] = 0;
- val[1] = green; color[1] = 1;
- val[2] = blue; color[2] = 2;
- val[3] = inten; color[3] = 3;
-
- for (j=0; j<3; j++)
- {
- for (k=j+1; k<4; k++)
- {
- if (val[j] < val[k])
- {
- val_swap = val[j];
- color_swap = color[j];
- val[j] = val[k];
- color[j] = color[k];
- val[k] = val_swap;
- color[k] = color_swap;
- }
- }
- }
- val2[0]=val[1]+1;
- val2[1]=val[2]+1;
- val2[2]=val[3]+1;
- val2[3]=0;
-
- for (j=0; j<4; j++)
- {
- switch(color[j])
- {
- case 0: red0 = val2[j];
- break;
- case 1: green0 = val2[j];
- break;
- case 2: blue0 = val2[j];
- break;
- case 3: inten0 = val2[j];
- break;
- }
- }
-
-
- gdk_draw_line(hist->pixmap, xsane.gc_red, i, HIST_HEIGHT - red, i, HIST_HEIGHT - red0);
- gdk_draw_line(hist->pixmap, xsane.gc_green, i, HIST_HEIGHT - green, i, HIST_HEIGHT - green0);
- gdk_draw_line(hist->pixmap, xsane.gc_blue, i, HIST_HEIGHT - blue, i, HIST_HEIGHT - blue0);
- gdk_draw_line(hist->pixmap, xsane.gc_black, i, HIST_HEIGHT - inten, i, HIST_HEIGHT - inten0);
- }
-
- gtk_widget_draw(hist->pixmapwid, &rect);
- }
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_establish_slider(XsaneSlider *slider)
-{
- int x, y, pos, len;
- guchar buf[XSANE_SLIDER_WIDTH*3];
- GdkRectangle rect;
-
- buf[0] = buf[1] = buf[2] = 0;
- buf[3+0] = buf[3+1] = buf[3+2]= 0;
-
- for (x=0; x<256; x++)
- {
- buf[3*x+0+6] = x * slider->r;
- buf[3*x+1+6] = x * slider->g;
- buf[3*x+2+6] = x * slider->b;
- }
-
- buf[258*3+0] = 255 * slider->r;
- buf[258*3+1] = 255 * slider->g;
- buf[258*3+2] = 255 * slider->b;
-
- buf[259*3+0] = 255 * slider->r;
- buf[259*3+1] = 255 * slider->g;
- buf[259*3+2] = 255 * slider->b;
-
- for (y=0; y<XSANE_SLIDER_HEIGHT; y++)
- {
- pos = slider->position[0]-y/2;
- len = y;
- if (pos<-2)
- {
- len = len + pos + 2;
- pos = -2;
- }
- pos = pos * 3 + 6;
-
- for (x=0; x<=len; x++)
- {
- if ((x == 0) || (x == len) || (y == XSANE_SLIDER_HEIGHT-1))
- {
- buf[pos++] = 255;
- buf[pos++] = 255;
- buf[pos++] = 255;
- }
- else
- {
- buf[pos++] = 0;
- buf[pos++] = 0;
- buf[pos++] = 0;
- }
- }
-
-
- pos = slider->position[1]-y/2;
- len = y;
- pos = pos * 3 + 6;
-
- for (x=0; x<=len; x++)
- {
- if ((x == 0) || (x == len) || (y == XSANE_SLIDER_HEIGHT-1))
- {
- buf[pos++] = 255;
- buf[pos++] = 255;
- buf[pos++] = 255;
- }
- else
- {
- buf[pos++] = 128;
- buf[pos++] = 128;
- buf[pos++] = 128;
- }
- }
-
-
- pos = slider->position[2]-y/2;
- len = y;
- if (pos+len>257)
- {
- len = 257 - pos;
- }
- pos = pos * 3 + 6;
-
- for (x=0; x<=len; x++)
- {
- if ((x == 0) || (x == len) || (y == XSANE_SLIDER_HEIGHT-1))
- {
- buf[pos++] = 0;
- buf[pos++] = 0;
- buf[pos++] = 0;
- }
- else
- {
- buf[pos++] = 255;
- buf[pos++] = 255;
- buf[pos++] = 255;
- }
- }
-
- gtk_preview_draw_row(GTK_PREVIEW(slider->preview),buf, 0, y, XSANE_SLIDER_WIDTH);
- }
-
- rect.x=0;
- rect.y=0;
- rect.width = XSANE_SLIDER_WIDTH;
- rect.height = XSANE_SLIDER_HEIGHT;
-
- gtk_widget_draw(slider->preview, &rect);
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_draw_slider_level(XsaneSlider *slider)
-{
- int i;
- guchar buf[XSANE_SLIDER_WIDTH*3];
- GdkRectangle rect;
-
- buf[0] = buf[1] = buf[2] = 0;
- buf[3+0] = buf[3+1] = buf[3+2]= 0;
-
- for (i=0; i<256; i++)
- {
- buf[3*i+0+6] = i * slider->r;
- buf[3*i+1+6] = i * slider->g;
- buf[3*i+2+6] = i * slider->b;
- }
-
- buf[258*3+0] = 255 * slider->r;
- buf[258*3+1] = 255 * slider->g;
- buf[258*3+2] = 255 * slider->b;
-
- buf[259*3+0] = 255 * slider->r;
- buf[259*3+1] = 255 * slider->g;
- buf[259*3+2] = 255 * slider->b;
-
- for (i=0; i<XSANE_SLIDER_HEIGHT; i++)
- {
- gtk_preview_draw_row(GTK_PREVIEW(slider->preview),buf, 0, i, XSANE_SLIDER_WIDTH);
- }
-
- rect.x=0;
- rect.y=0;
- rect.width = XSANE_SLIDER_WIDTH;
- rect.height = XSANE_SLIDER_HEIGHT;
-
- gtk_widget_draw(slider->preview, &rect);
-}
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-static void xsane_set_slider(XsaneSlider *slider, double min, double mid, double max)
-{
- slider->value[0] = min;
- slider->value[1] = mid;
- slider->value[2] = max;
-
- slider->position[0] = min * 2.55;
- slider->position[1] = mid * 2.55;
- slider->position[2] = max * 2.55;
-
- xsane_establish_slider(slider);
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_update_slider(XsaneSlider *slider)
-{
- slider->position[0] = 2.55 * slider->value[0];
- slider->position[1] = 2.55 * slider->value[1];
- slider->position[2] = 2.55 * slider->value[2];
-
- xsane_establish_slider(slider);
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_update_sliders()
-{
- xsane_update_slider(&xsane.slider_gray);
-
- if ( (xsane.xsane_color) && (!xsane.enhancement_rgb_default) )
- {
- xsane_update_slider(&xsane.slider_red);
- xsane_update_slider(&xsane.slider_green);
- xsane_update_slider(&xsane.slider_blue);
-
- xsane.slider_gray.active &= ~XSANE_SLIDER_INACTIVE; /* mark slider active */
- xsane.slider_red.active &= ~XSANE_SLIDER_INACTIVE; /* mark slider active */
- xsane.slider_green.active &= ~XSANE_SLIDER_INACTIVE; /* mark slider active */
- xsane.slider_blue.active &= ~XSANE_SLIDER_INACTIVE; /* mark slider active */
- }
- else
- {
- xsane_draw_slider_level(&xsane.slider_red); /* remove slider */
- xsane_draw_slider_level(&xsane.slider_green); /* remove slider */
- xsane_draw_slider_level(&xsane.slider_blue); /* remove slider */
-
- xsane.slider_red.active = XSANE_SLIDER_INACTIVE; /* mark slider inactive */
- xsane.slider_green.active = XSANE_SLIDER_INACTIVE; /* mark slider inactive */
- xsane.slider_blue.active = XSANE_SLIDER_INACTIVE; /* mark slider inactive */
-
- if (xsane.param.depth == 1)
- {
- xsane_draw_slider_level(&xsane.slider_gray); /* remove slider */
- xsane.slider_gray.active = XSANE_SLIDER_INACTIVE; /* mark slider inactive */
- }
- else
- {
- xsane.slider_gray.active &= ~XSANE_SLIDER_INACTIVE; /* mark slider active */
- }
- }
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-static gint xsane_slider_callback(GtkWidget *widget, GdkEvent *event, XsaneSlider *slider)
-{
- GdkEventButton *button_event;
- GdkEventMotion *motion_event;
- int distance;
- int i = 0;
- static int update = FALSE;
- static int event_count = 0;
- static int x;
-
- if (slider->active == XSANE_SLIDER_INACTIVE)
- {
- return 0;
- }
-
- event_count++;
-
- switch(event->type)
- {
- case GDK_BUTTON_PRESS:
- gtk_grab_add(widget);
- button_event = (GdkEventButton *) event;
-
- distance = G_MAXINT;
- for (i=0; i<3; i++)
- {
- if (fabs(button_event->x - slider->position[i]) < distance)
- {
- slider->active = i + 1;
- distance = fabs(button_event->x - slider->position[i]);
- }
- }
- if (distance<10)
- {
- x = button_event->x;
- update = TRUE;
- }
- else
- {
- slider->active = XSANE_SLIDER_ACTIVE;
- }
- break;
-
- case GDK_BUTTON_RELEASE:
- gtk_grab_remove(widget);
- xsane_enhancement_by_histogram(); /* slider->active must be unchanged !!! */
- slider->active = XSANE_SLIDER_ACTIVE; /* ok, now we can reset it */
- break;
-
- case GDK_MOTION_NOTIFY:
- motion_event = (GdkEventMotion *) event;
- gdk_window_get_pointer(widget->window, &x, 0, 0);
- update = TRUE;
- break;
-
- default:
- break;
- }
-
- if (update)
- {
- update = FALSE;
- switch(slider->active)
- {
- case 1:
- slider->value[0] = (x-XSANE_SLIDER_OFFSET) / 2.55;
- xsane_bound_double(&slider->value[0], 0.0, slider->value[1] - 1);
- break;
-
- case 2:
- slider->value[1] = (x-XSANE_SLIDER_OFFSET) / 2.55;
- xsane_bound_double(&slider->value[1], slider->value[0] + 1, slider->value[2] - 1);
- break;
-
- case 3:
- slider->value[2] = (x-XSANE_SLIDER_OFFSET) / 2.55;
- xsane_bound_double(&slider->value[2], slider->value[1] + 1, 100.0);
- break;
-
- default:
- break;
- }
- xsane_set_slider(slider, slider->value[0], slider->value[1], slider->value[2]);
-
- if ((preferences.gtk_update_policy == GTK_UPDATE_CONTINUOUS) && (event_count == 1))
- {
- xsane_enhancement_by_histogram();
- }
- else if ((preferences.gtk_update_policy == GTK_UPDATE_DELAYED) && (event_count == 1))
- {
- xsane_enhancement_by_histogram();
- }
- }
-
- while (gtk_events_pending())
- {
- gtk_main_iteration();
- }
-
- event_count--;
-
- return 0;
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_create_slider(XsaneSlider *slider)
-{
- slider->preview = gtk_preview_new(GTK_PREVIEW_COLOR);
- gtk_preview_size(GTK_PREVIEW(slider->preview), XSANE_SLIDER_WIDTH, XSANE_SLIDER_HEIGHT);
- gtk_widget_set_events(slider->preview, XSANE_SLIDER_EVENTS);
- gtk_signal_connect(GTK_OBJECT(slider->preview), "event", GTK_SIGNAL_FUNC(xsane_slider_callback), slider);
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_create_histogram(GtkWidget *parent, const char *title, int width, int height, XsanePixmap *hist)
-{
- GdkBitmap *mask=NULL;
-
- hist->frame = gtk_frame_new(title);
- hist->pixmap = gdk_pixmap_new(xsane.histogram_dialog->window, width, height, -1);
- hist->pixmapwid = gtk_pixmap_new(hist->pixmap, mask);
- gtk_container_add(GTK_CONTAINER(hist->frame), hist->pixmapwid);
- gdk_draw_rectangle(hist->pixmap, xsane.gc_backg, TRUE, 0, 0, width, height);
-
- gtk_box_pack_start(GTK_BOX(parent), hist->frame, FALSE, FALSE, 2);
- gtk_widget_show(hist->pixmapwid);
- gtk_widget_show(hist->frame);
- }
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-static void xsane_calculate_auto_enhancement(int negative,
- SANE_Int *count_raw, SANE_Int *count_raw_red, SANE_Int *count_raw_green, SANE_Int *count_raw_blue)
-{ /* calculate white, medium and black values for auto enhancement */
- int limit, limit_mid;
- int points, points_mix, points_red, points_green, points_blue;
- int min, mid, max;
- int min_red, mid_red, max_red;
- int min_green, mid_green, max_green;
- int min_blue, mid_blue, max_blue;
- int val;
- int i;
-
- if (xsane.preview)
- {
- points = 0;
- points_mix = 0;
- points_red = 0;
- points_green = 0;
- points_blue = 0;
-
- for (i=0; i<256; i++)
- {
- points += count_raw[i];
- points_mix += 10 * log(1 + count_raw[i] + count_raw_red[i] + count_raw_green[i] + count_raw_blue[i]);
- points_red += 10 * log(1 + count_raw_red[i]);
- points_green += 10 * log(1 + count_raw_green[i]);
- points_blue += 10 * log(1 + count_raw_blue[i]);
- }
-
- limit = 1 + points / 5000;
-
- /* ----- gray ----- */
-
- min = -1;
- val = 0;
- while ( (val/4 < limit) && (min < 254) )
- {
- min++;
- val += count_raw[min] + count_raw_red[min] + count_raw_green[min] + count_raw_blue[min];
- }
-
- max = HIST_WIDTH;
- val = 0;
- while ( (val/4 < limit) && (max > min + 1) )
- {
- max--;
- val += count_raw[max] + count_raw_red[max] + count_raw_green[max] + count_raw_blue[max];
- }
-
- limit_mid = points_mix / 2.0;
-
- mid = 0;
- val = 0;
- while ( (val < limit_mid) && (mid < max - 2) )
- {
- mid++;
- val += 10 * log(1 + count_raw[mid] + count_raw_red[mid] + count_raw_green[mid] + count_raw_blue[mid]);
- }
-
- /* ----- red ----- */
-
- min_red = -1;
- val = 0;
- while ( (val < limit) && (min_red < 254) )
- {
- min_red++;
- val += count_raw_red[min_red];
- }
-
- max_red = HIST_WIDTH;
- val = 0;
- while ( (val < limit) && (max_red > min_red + 1) )
- {
- max_red--;
- val += count_raw_red[max_red];
- }
-
- limit_mid = points_red / 2.0;
-
- mid_red = 0;
- val = 0;
- while ( (val < limit_mid) && (mid_red < max_red - 2) )
- {
- mid_red++;
- val += 10 * log(1 + count_raw_red[mid_red]);
- }
-
- /* ----- green ----- */
-
- min_green = -1;
- val = 0;
- while ( (val < limit) && (min_green < 254) )
- {
- min_green++;
- val += count_raw_green[min_green];
- }
-
- max_green = HIST_WIDTH;
- val = 0;
- while ( (val < limit) && (max_green > min_green + 1) )
- {
- max_green--;
- val += count_raw_green[max_green];
- }
-
- limit_mid = points_green / 2.0;
-
- mid_green = 0;
- val = 0;
- while ( (val < limit_mid) && (mid_green < max_green - 2) )
- {
- mid_green++;
- val += 10 * log(1 + count_raw_green[mid_green]);
- }
-
- /* ----- blue ----- */
-
- min_blue = -1;
- val = 0;
- while ( (val < limit) && (min_blue < 254) )
- {
- min_blue++;
- val += count_raw_blue[min_blue];
- }
-
- max_blue = HIST_WIDTH;
- val = 0;
- while ( (val < limit) && (max_blue > min_blue + 1) )
- {
- max_blue--;
- val += count_raw_blue[max_blue];
- }
-
- limit_mid = points_blue / 2.0;
-
- mid_blue = 0;
- val = 0;
- while ( (val < limit_mid) && (mid_blue < max_blue - 2) )
- {
- mid_blue++;
- val += 10 * log(1 + count_raw_blue[mid_blue]);
- }
-
- if (negative)
- {
- xsane.auto_white = (255-min)/2.55;
- xsane.auto_gray = (255-mid)/2.55;
- xsane.auto_black = (255-max)/2.55;
-
- xsane.auto_white_red = (255-min_red)/2.55;
- xsane.auto_gray_red = (255-mid_red)/2.55;
- xsane.auto_black_red = (255-max_red)/2.55;
-
- xsane.auto_white_green = (255-min_green)/2.55;
- xsane.auto_gray_green = (255-mid_green)/2.55;
- xsane.auto_black_green = (255-max_green)/2.55;
-
- xsane.auto_white_blue = (255-min_blue)/2.55;
- xsane.auto_gray_blue = (255-mid_blue)/2.55;
- xsane.auto_black_blue = (255-max_blue)/2.55;
- }
- else /* positive */
- {
- xsane.auto_white = max/2.55;
- xsane.auto_gray = mid/2.55;
- xsane.auto_black = min/2.55;
-
- xsane.auto_white_red = max_red/2.55;
- xsane.auto_gray_red = mid_red/2.55;
- xsane.auto_black_red = min_red/2.55;
-
- xsane.auto_white_green = max_green/2.55;
- xsane.auto_gray_green = mid_green/2.55;
- xsane.auto_black_green = min_green/2.55;
-
- xsane.auto_white_blue = max_blue/2.55;
- xsane.auto_gray_blue = mid_blue/2.55;
- xsane.auto_black_blue = min_blue/2.55;
- }
- }
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_calculate_histogram(void)
-{
- SANE_Int *count_raw;
- SANE_Int *count_raw_red;
- SANE_Int *count_raw_green;
- SANE_Int *count_raw_blue;
- SANE_Int *count_enh;
- SANE_Int *count_enh_red;
- SANE_Int *count_enh_green;
- SANE_Int *count_enh_blue;
- int i;
- int maxval_raw;
- int maxval_enh;
- int maxval;
- double scale;
-
- /* at first reset auto enhancement values */
-
- xsane.auto_black = 0.0;
- xsane.auto_gray = 50.0;
- xsane.auto_white = 100.0;
-
- xsane.auto_black_red = 0.0;
- xsane.auto_gray_red = 50.0;
- xsane.auto_white_red = 100.0;
-
- xsane.auto_black_green = 0.0;
- xsane.auto_gray_green = 50.0;
- xsane.auto_white_green = 100.0;
-
- xsane.auto_black_blue = 0.0;
- xsane.auto_gray_blue = 50.0;
- xsane.auto_white_blue = 100.0;
-
- if (xsane.preview) /* preview window exists? */
- {
- count_raw = calloc(256, sizeof(SANE_Int));
- count_raw_red = calloc(256, sizeof(SANE_Int));
- count_raw_green = calloc(256, sizeof(SANE_Int));
- count_raw_blue = calloc(256, sizeof(SANE_Int));
- count_enh = calloc(256, sizeof(SANE_Int));
- count_enh_red = calloc(256, sizeof(SANE_Int));
- count_enh_green = calloc(256, sizeof(SANE_Int));
- count_enh_blue = calloc(256, sizeof(SANE_Int));
-
- preview_calculate_histogram(xsane.preview, count_raw, count_raw_red, count_raw_green, count_raw_blue,
- count_enh, count_enh_red, count_enh_green, count_enh_blue);
-
- if (xsane.param.depth > 1)
- {
- xsane_calculate_auto_enhancement(xsane.negative, count_raw, count_raw_red, count_raw_green, count_raw_blue);
- }
-
- if (xsane.histogram_log) /* logarithmical display */
- {
- for (i=0; i<=255; i++)
- {
- count_raw[i] = (int) (50*log(1.0 + count_raw[i]));
- count_raw_red[i] = (int) (50*log(1.0 + count_raw_red[i]));
- count_raw_green[i] = (int) (50*log(1.0 + count_raw_green[i]));
- count_raw_blue[i] = (int) (50*log(1.0 + count_raw_blue[i]));
-
- count_enh[i] = (int) (50*log(1.0 + count_enh[i]));
- count_enh_red[i] = (int) (50*log(1.0 + count_enh_red[i]));
- count_enh_green[i] = (int) (50*log(1.0 + count_enh_green[i]));
- count_enh_blue[i] = (int) (50*log(1.0 + count_enh_blue[i]));
- }
- }
-
- maxval_raw = 0;
- maxval_enh = 0;
-
- /* first and last 10 values are not used for calculating maximum value */
- for (i = 10 ; i < HIST_WIDTH - 10; i++)
- {
- if (count_raw[i] > maxval_raw) { maxval_raw = count_raw[i]; }
- if (count_raw_red[i] > maxval_raw) { maxval_raw = count_raw_red[i]; }
- if (count_raw_green[i] > maxval_raw) { maxval_raw = count_raw_green[i]; }
- if (count_raw_blue[i] > maxval_raw) { maxval_raw = count_raw_blue[i]; }
- if (count_enh[i] > maxval_enh) { maxval_enh = count_enh[i]; }
- if (count_enh_red[i] > maxval_enh) { maxval_enh = count_enh_red[i]; }
- if (count_enh_green[i] > maxval_enh) { maxval_enh = count_enh_green[i]; }
- if (count_enh_blue[i] > maxval_enh) { maxval_enh = count_enh_blue[i]; }
- }
- maxval = ((maxval_enh > maxval_raw) ? maxval_enh : maxval_raw);
- scale = 100.0/maxval;
-
- if (xsane.histogram_lines)
- {
- xsane_draw_histogram_with_lines(&xsane.histogram_raw, xsane.negative,
- count_raw, count_raw_red, count_raw_green, count_raw_blue,
- xsane.histogram_red, xsane.histogram_green, xsane.histogram_blue, xsane.histogram_int, scale);
-
- xsane_draw_histogram_with_lines(&xsane.histogram_enh, 0 /* negative is done by gamma table */,
- count_enh, count_enh_red, count_enh_green, count_enh_blue,
- xsane.histogram_red, xsane.histogram_green, xsane.histogram_blue, xsane.histogram_int, scale);
- }
- else
- {
- xsane_draw_histogram_with_points(&xsane.histogram_raw, xsane.negative,
- count_raw, count_raw_red, count_raw_green, count_raw_blue,
- xsane.histogram_red, xsane.histogram_green, xsane.histogram_blue, xsane.histogram_int, scale);
-
- xsane_draw_histogram_with_points(&xsane.histogram_enh, 0 /*negative is done by gamma table */,
- count_enh, count_enh_red, count_enh_green, count_enh_blue,
- xsane.histogram_red, xsane.histogram_green, xsane.histogram_blue, xsane.histogram_int, scale);
- }
-
- free(count_enh_blue);
- free(count_enh_green);
- free(count_enh_red);
- free(count_enh);
- free(count_raw_blue);
- free(count_raw_green);
- free(count_raw_red);
- free(count_raw);
- }
- else
- {
- xsane_clear_histogram(&xsane.histogram_raw);
- xsane_clear_histogram(&xsane.histogram_enh);
- }
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_update_histogram()
-{
- if (preferences.show_histogram)
- {
- xsane_calculate_histogram();
- gtk_widget_show(xsane.histogram_dialog);
- }
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_histogram_toggle_button_callback(GtkWidget *widget, gpointer data)
-{
- int *valuep = data;
-
- *valuep = (GTK_TOGGLE_BUTTON(widget)->active != 0);
- xsane_update_histogram();
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_create_gamma_curve(SANE_Int *gammadata, int negative, double gamma,
- double brightness, double contrast, int numbers, int maxout)
-{
- int i;
- double midin;
- double val;
- double m;
- double b;
- int maxin = numbers-1;
-
- if (contrast < -100.0)
- {
- contrast = -100.0;
- }
-
- midin = (int)(numbers / 2.0);
-
- m = 1.0 + contrast/100.0;
- b = (1.0 + brightness/100.0) * midin;
-
- if (negative)
- {
- for (i=0; i <= maxin; i++)
- {
- val = ((double) (maxin - i)) - midin;
- val = val * m + b;
- xsane_bound_double(&val, 0.0, maxin);
-
- gammadata[i] = 0.5 + maxout * pow( val/maxin, (1.0/gamma) );
- }
- }
- else /* positive */
- {
- for (i=0; i <= maxin; i++)
- {
- val = ((double) i) - midin;
- val = val * m + b;
- xsane_bound_double(&val, 0.0, maxin);
-
- gammadata[i] = 0.5 + maxout * pow( val/maxin, (1.0/gamma) );
- }
- }
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_update_gamma(void)
-{
- if (xsane.preview)
- {
- if (!xsane.preview_gamma_data_red)
- {
- xsane.preview_gamma_data_red = malloc(256 * sizeof(SANE_Int));
- xsane.preview_gamma_data_green = malloc(256 * sizeof(SANE_Int));
- xsane.preview_gamma_data_blue = malloc(256 * sizeof(SANE_Int));
-
- xsane.histogram_gamma_data_red = malloc(256 * sizeof(SANE_Int));
- xsane.histogram_gamma_data_green = malloc(256 * sizeof(SANE_Int));
- xsane.histogram_gamma_data_blue = malloc(256 * sizeof(SANE_Int));
- }
-
- xsane_create_gamma_curve(xsane.preview_gamma_data_red, xsane.negative,
- xsane.gamma * xsane.gamma_red * preferences.preview_gamma * preferences.preview_gamma_red,
- xsane.brightness + xsane.brightness_red,
- xsane.contrast + xsane.contrast_red, 256, 255);
-
- xsane_create_gamma_curve(xsane.preview_gamma_data_green, xsane.negative,
- xsane.gamma * xsane.gamma_green * preferences.preview_gamma * preferences.preview_gamma_green,
- xsane.brightness + xsane.brightness_green,
- xsane.contrast + xsane.contrast_green, 256, 255);
-
- xsane_create_gamma_curve(xsane.preview_gamma_data_blue, xsane.negative,
- xsane.gamma * xsane.gamma_blue * preferences.preview_gamma * preferences.preview_gamma_blue,
- xsane.brightness + xsane.brightness_blue,
- xsane.contrast + xsane.contrast_blue , 256, 255);
-
- xsane_create_gamma_curve(xsane.histogram_gamma_data_red, xsane.negative,
- xsane.gamma * xsane.gamma_red,
- xsane.brightness + xsane.brightness_red,
- xsane.contrast + xsane.contrast_red, 256, 255);
-
- xsane_create_gamma_curve(xsane.histogram_gamma_data_green, xsane.negative,
- xsane.gamma * xsane.gamma_green,
- xsane.brightness + xsane.brightness_green,
- xsane.contrast + xsane.contrast_green, 256, 255);
-
- xsane_create_gamma_curve(xsane.histogram_gamma_data_blue, xsane.negative,
- xsane.gamma * xsane.gamma_blue,
- xsane.brightness + xsane.brightness_blue,
- xsane.contrast + xsane.contrast_blue , 256, 255);
-
- preview_gamma_correction(xsane.preview,
- xsane.preview_gamma_data_red, xsane.preview_gamma_data_green, xsane.preview_gamma_data_blue,
- xsane.histogram_gamma_data_red, xsane.histogram_gamma_data_green, xsane.histogram_gamma_data_blue);
-
- }
- xsane_update_histogram();
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-static void xsane_enhancement_update(void)
-{
- guint sig_changed=0;
-
- if (xsane.param.depth == 1) /* lineart? no gamma */
- {
- return;
- }
-
- sig_changed = gtk_signal_lookup("changed", GTK_OBJECT_TYPE(xsane.gamma_widget));
-
- GTK_ADJUSTMENT(xsane.gamma_widget)->value = xsane.gamma;
- GTK_ADJUSTMENT(xsane.brightness_widget)->value = xsane.brightness;
- GTK_ADJUSTMENT(xsane.contrast_widget)->value = xsane.contrast;
-
- if ( (xsane.xsane_color) && (!xsane.enhancement_rgb_default) )
- {
- GTK_ADJUSTMENT(xsane.gamma_red_widget)->value = xsane.gamma_red;
- GTK_ADJUSTMENT(xsane.gamma_green_widget)->value = xsane.gamma_green;
- GTK_ADJUSTMENT(xsane.gamma_blue_widget)->value = xsane.gamma_blue;
-
- GTK_ADJUSTMENT(xsane.brightness_red_widget)->value = xsane.brightness_red;
- GTK_ADJUSTMENT(xsane.brightness_green_widget)->value = xsane.brightness_green;
- GTK_ADJUSTMENT(xsane.brightness_blue_widget)->value = xsane.brightness_blue;
-
- GTK_ADJUSTMENT(xsane.contrast_red_widget)->value = xsane.contrast_red;
- GTK_ADJUSTMENT(xsane.contrast_green_widget)->value = xsane.contrast_green;
- GTK_ADJUSTMENT(xsane.contrast_blue_widget)->value = xsane.contrast_blue;
-
- gtk_signal_emit(xsane.gamma_red_widget, sig_changed);
- gtk_signal_emit(xsane.gamma_green_widget, sig_changed);
- gtk_signal_emit(xsane.gamma_blue_widget, sig_changed);
-
- gtk_signal_emit(xsane.brightness_red_widget, sig_changed);
- gtk_signal_emit(xsane.brightness_green_widget, sig_changed);
- gtk_signal_emit(xsane.brightness_blue_widget, sig_changed);
-
- gtk_signal_emit(xsane.contrast_red_widget, sig_changed);
- gtk_signal_emit(xsane.contrast_green_widget, sig_changed);
- gtk_signal_emit(xsane.contrast_blue_widget, sig_changed);
-
- }
-
- gtk_signal_emit(xsane.gamma_widget, sig_changed);
- gtk_signal_emit(xsane.brightness_widget, sig_changed);
- gtk_signal_emit(xsane.contrast_widget, sig_changed);
-
- xsane_update_sliders(); /* update histogram slider */
-
- while (gtk_events_pending())
- {
- gtk_main_iteration();
- }
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-static void xsane_gamma_to_histogram(double *min, double *mid, double *max,
- double contrast, double brightness, double gamma)
-{
- double m;
- double b;
-
- m = 1.0 + contrast/100.0;
- b = (1.0 + brightness/100.0) * 50.0;
-
- if (m > 0)
- {
- *min = 50.0 - b/m;
- *mid = (100.0 * pow(0.5, gamma)-b) / m + 50.0;
- *max = (100.0-b)/m + 50.0;
- }
- else
- {
- *min = 0.0;
- *mid = 50.0;
- *max = 100.0;
- }
-
- xsane_bound_double(min, 0.0, 99.0);
- xsane_bound_double(max, 1.0, 100.0);
- xsane_bound_double(mid, *min+1, *max-1);
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_enhancement_by_gamma(void)
-{
- double min, mid, max;
- double contrast, brightness, gamma;
-
- xsane_gamma_to_histogram(&min, &mid, &max, xsane.contrast, xsane.brightness, xsane.gamma);
-
- xsane.slider_gray.value[0] = min;
- xsane.slider_gray.value[1] = mid;
- xsane.slider_gray.value[2] = max;
-
-
- /* red */
- contrast = xsane.contrast + xsane.contrast_red;
- brightness = xsane.brightness + xsane.brightness_red;
- gamma = xsane.gamma * xsane.gamma_red;
-
- if (contrast < -100.0)
- {
- contrast = -100.0;
- }
-
- xsane_gamma_to_histogram(&min, &mid, &max, contrast, brightness, gamma);
-
- xsane.slider_red.value[0] = min;
- xsane.slider_red.value[1] = mid;
- xsane.slider_red.value[2] = max;
-
-
- /* green */
- contrast = xsane.contrast + xsane.contrast_green;
- brightness = xsane.brightness + xsane.brightness_green;
- gamma = xsane.gamma * xsane.gamma_green;
-
- if (contrast < -100.0)
- {
- contrast = -100.0;
- }
-
- xsane_gamma_to_histogram(&min, &mid, &max, contrast, brightness, gamma);
-
- xsane.slider_green.value[0] = min;
- xsane.slider_green.value[1] = mid;
- xsane.slider_green.value[2] = max;
-
-
- /* blue */
- contrast = xsane.contrast + xsane.contrast_blue;
- brightness = xsane.brightness + xsane.brightness_blue;
- gamma = xsane.gamma * xsane.gamma_blue;
-
- if (contrast < -100.0)
- {
- contrast = -100.0;
- }
-
- xsane_gamma_to_histogram(&min, &mid, &max,
- xsane.contrast + xsane.contrast_blue,
- xsane.brightness + xsane.brightness_blue,
- xsane.gamma * xsane.gamma_blue);
-
- xsane.slider_blue.value[0] = min;
- xsane.slider_blue.value[1] = mid;
- xsane.slider_blue.value[2] = max;
-
-
- xsane_enhancement_update();
- xsane_update_gamma();
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_enhancement_restore_default()
-{
- xsane.gamma = 1.0;
- xsane.gamma_red = 1.0;
- xsane.gamma_green = 1.0;
- xsane.gamma_blue = 1.0;
-
- xsane.brightness = 0.0;
- xsane.brightness_red = 0.0;
- xsane.brightness_green = 0.0;
- xsane.brightness_blue = 0.0;
-
- xsane.contrast = 0.0;
- xsane.contrast_red = 0.0;
- xsane.contrast_green = 0.0;
- xsane.contrast_blue = 0.0;
-
- xsane_enhancement_by_gamma();
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_enhancement_restore()
-{
- xsane.gamma = preferences.xsane_gamma;
- xsane.gamma_red = preferences.xsane_gamma_red;
- xsane.gamma_green = preferences.xsane_gamma_green;
- xsane.gamma_blue = preferences.xsane_gamma_blue;
-
- xsane.brightness = preferences.xsane_brightness;
- xsane.brightness_red = preferences.xsane_brightness_red;
- xsane.brightness_green = preferences.xsane_brightness_green;
- xsane.brightness_blue = preferences.xsane_brightness_blue;
-
- xsane.contrast = preferences.xsane_contrast;
- xsane.contrast_red = preferences.xsane_contrast_red;
- xsane.contrast_green = preferences.xsane_contrast_green;
- xsane.contrast_blue = preferences.xsane_contrast_blue;
-
- xsane.enhancement_rgb_default = preferences.xsane_rgb_default;
- xsane.negative = preferences.xsane_negative;
-
- xsane_refresh_dialog(dialog);
- xsane_enhancement_by_gamma();
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_enhancement_store()
-{
- preferences.xsane_gamma = xsane.gamma;
- preferences.xsane_gamma_red = xsane.gamma_red;
- preferences.xsane_gamma_green = xsane.gamma_green;
- preferences.xsane_gamma_blue = xsane.gamma_blue;
-
- preferences.xsane_brightness = xsane.brightness;
- preferences.xsane_brightness_red = xsane.brightness_red;
- preferences.xsane_brightness_green = xsane.brightness_green;
- preferences.xsane_brightness_blue = xsane.brightness_blue;
-
- preferences.xsane_contrast = xsane.contrast;
- preferences.xsane_contrast_red = xsane.contrast_red;
- preferences.xsane_contrast_green = xsane.contrast_green;
- preferences.xsane_contrast_blue = xsane.contrast_blue;
-
- preferences.xsane_rgb_default = xsane.enhancement_rgb_default;
- preferences.xsane_negative = xsane.negative;
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-static void xsane_histogram_to_gamma(XsaneSlider *slider, double *contrast, double *brightness, double *gamma)
-{
- double mid;
- double range;
-
- *contrast = (10000.0 / (slider->value[2] - slider->value[0]) - 100.0);
- *brightness = - (slider->value[0] - 50.0) * (*contrast + 100.0)/50.0 - 100.0;
-
- mid = slider->value[1] - slider->value[0];
- range = slider->value[2] - slider->value[0];
-
- *gamma = log(mid/range) / log(0.5);
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_enhancement_by_histogram(void)
-{
- double gray_brightness;
- double gray_contrast;
- double gray_gamma;
- double brightness;
- double contrast;
- double gamma;
-
- xsane_histogram_to_gamma(&xsane.slider_gray, &gray_contrast, &gray_brightness, &gray_gamma);
-
- xsane.gamma = gray_gamma;
- xsane.brightness = gray_brightness;
- xsane.contrast = gray_contrast;
-
- if ( (xsane.xsane_color) && (!xsane.enhancement_rgb_default) ) /* rgb sliders active */
- {
- if ((xsane.slider_gray.active == XSANE_SLIDER_ACTIVE) ||
- (xsane.slider_gray.active == XSANE_SLIDER_INACTIVE)) /* gray slider not moved */
- {
- xsane_histogram_to_gamma(&xsane.slider_red, &contrast, &brightness, &gamma);
-
- xsane.gamma_red = gamma / gray_gamma;
- xsane.brightness_red = brightness - gray_brightness;
- xsane.contrast_red = contrast - gray_contrast;
-
- xsane_histogram_to_gamma(&xsane.slider_green, &contrast, &brightness, &gamma);
-
- xsane.gamma_green = gamma / gray_gamma;
- xsane.brightness_green = brightness - gray_brightness;
- xsane.contrast_green = contrast - gray_contrast;
-
- xsane_histogram_to_gamma(&xsane.slider_blue, &contrast, &brightness, &gamma);
-
- xsane.gamma_blue = gamma / gray_gamma;
- xsane.brightness_blue = brightness - gray_brightness;
- xsane.contrast_blue = contrast - gray_contrast;
-
- xsane_enhancement_update();
- xsane_update_gamma();
- }
- else /* gray slider was moved in rgb-mode */
- {
- xsane_enhancement_by_gamma();
- }
- }
- else /* rgb sliders not active */
- {
- xsane_enhancement_update();
- xsane_update_gamma();
- }
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-static gint xsane_histogram_win_delete(GtkWidget *widget, gpointer data)
-{
- gtk_widget_hide(widget);
- preferences.show_histogram = FALSE;
- gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(xsane.show_histogram_widget), preferences.show_histogram);
- return TRUE;
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-
-void xsane_create_histogram_dialog(const char *devicetext)
-{
- char windowname[255];
- GtkWidget *xsane_color_hbox;
- GtkWidget *xsane_histogram_vbox;
- GdkColor color_black;
- GdkColor color_red;
- GdkColor color_green;
- GdkColor color_blue;
- GdkColor color_backg;
- GdkColormap *colormap;
- GtkStyle *style;
-
- xsane.histogram_dialog = gtk_window_new(GTK_WINDOW_DIALOG);
- gtk_window_set_policy(GTK_WINDOW(xsane.histogram_dialog), FALSE, FALSE, FALSE);
- gtk_widget_set_uposition(xsane.histogram_dialog, XSANE_HISTOGRAM_POS_X, XSANE_HISTOGRAM_POS_Y);
- gtk_signal_connect(GTK_OBJECT(xsane.histogram_dialog), "delete_event", GTK_SIGNAL_FUNC(xsane_histogram_win_delete), 0);
- sprintf(windowname, "%s %s", WINDOW_HISTOGRAM, devicetext);
- gtk_window_set_title(GTK_WINDOW(xsane.histogram_dialog), windowname);
- xsane_set_window_icon(xsane.histogram_dialog, 0);
-
- xsane_histogram_vbox = gtk_vbox_new(FALSE, 0);
- gtk_container_set_border_width(GTK_CONTAINER(xsane_histogram_vbox), 5);
- gtk_container_add(GTK_CONTAINER(xsane.histogram_dialog), xsane_histogram_vbox);
- gtk_widget_show(xsane_histogram_vbox);
-
-
- /* set gc for histogram drawing */
- gtk_widget_realize(xsane.histogram_dialog); /* realize dialog to get colors and style */
-
- style = gtk_widget_get_style(xsane.histogram_dialog);
-/*
- style = gtk_rc_get_style(xsane.histogram_dialog);
- style = gtk_widget_get_default_style();
-*/
-
- xsane.gc_trans = style->bg_gc[GTK_STATE_NORMAL];
- xsane.bg_trans = &style->bg[GTK_STATE_NORMAL];
-
- colormap = gdk_window_get_colormap(xsane.histogram_dialog->window);
-
- xsane.gc_black = gdk_gc_new(xsane.histogram_dialog->window);
- color_black.red = 0;
- color_black.green = 0;
- color_black.blue = 0;
- gdk_color_alloc(colormap, &color_black);
- gdk_gc_set_foreground(xsane.gc_black, &color_black);
-
- xsane.gc_red = gdk_gc_new(xsane.histogram_dialog->window);
- color_red.red = 40000;
- color_red.green = 10000;
- color_red.blue = 10000;
- gdk_color_alloc(colormap, &color_red);
- gdk_gc_set_foreground(xsane.gc_red, &color_red);
-
- xsane.gc_green = gdk_gc_new(xsane.histogram_dialog->window);
- color_green.red = 10000;
- color_green.green = 40000;
- color_green.blue = 10000;
- gdk_color_alloc(colormap, &color_green);
- gdk_gc_set_foreground(xsane.gc_green, &color_green);
-
- xsane.gc_blue = gdk_gc_new(xsane.histogram_dialog->window);
- color_blue.red = 10000;
- color_blue.green = 10000;
- color_blue.blue = 40000;
- gdk_color_alloc(colormap, &color_blue);
- gdk_gc_set_foreground(xsane.gc_blue, &color_blue);
-
- xsane.gc_backg = gdk_gc_new(xsane.histogram_dialog->window);
- color_backg.red = 50000;
- color_backg.green = 50000;
- color_backg.blue = 50000;
- gdk_color_alloc(colormap, &color_backg);
- gdk_gc_set_foreground(xsane.gc_backg, &color_backg);
-
-
- /* add histogram images and sliders */
-
- xsane_create_histogram(xsane_histogram_vbox, FRAME_RAW_IMAGE, 256, 100, &(xsane.histogram_raw));
-
- xsane_separator_new(xsane_histogram_vbox, 0);
-
- xsane.slider_gray.r = 1;
- xsane.slider_gray.g = 1;
- xsane.slider_gray.b = 1;
- xsane.slider_gray.active = XSANE_SLIDER_ACTIVE;
- xsane_create_slider(&xsane.slider_gray);
- gtk_box_pack_start(GTK_BOX(xsane_histogram_vbox), xsane.slider_gray.preview, FALSE, FALSE, 0);
- gtk_widget_show(xsane.slider_gray.preview);
- gtk_widget_realize(xsane.slider_gray.preview);
-
- xsane_separator_new(xsane_histogram_vbox, 0);
-
- xsane.slider_red.r = 1;
- xsane.slider_red.g = 0;
- xsane.slider_red.b = 0;
- xsane.slider_red.active = XSANE_SLIDER_ACTIVE;
- xsane_create_slider(&xsane.slider_red);
- gtk_box_pack_start(GTK_BOX(xsane_histogram_vbox), xsane.slider_red.preview, FALSE, FALSE, 0);
- gtk_widget_show(xsane.slider_red.preview);
- gtk_widget_realize(xsane.slider_red.preview);
-
- xsane_separator_new(xsane_histogram_vbox, 0);
-
- xsane.slider_green.r = 0;
- xsane.slider_green.g = 1;
- xsane.slider_green.b = 0;
- xsane.slider_green.active = XSANE_SLIDER_ACTIVE;
- xsane_create_slider(&xsane.slider_green);
- gtk_box_pack_start(GTK_BOX(xsane_histogram_vbox), xsane.slider_green.preview, FALSE, FALSE, 0);
- gtk_widget_show(xsane.slider_green.preview);
- gtk_widget_realize(xsane.slider_green.preview);
-
- xsane_separator_new(xsane_histogram_vbox, 0);
-
- xsane.slider_blue.r = 0;
- xsane.slider_blue.g = 0;
- xsane.slider_blue.b = 1;
- xsane.slider_blue.active = XSANE_SLIDER_ACTIVE;
- xsane_create_slider(&xsane.slider_blue);
- gtk_box_pack_start(GTK_BOX(xsane_histogram_vbox), xsane.slider_blue.preview, FALSE, FALSE, 0);
- gtk_widget_show(xsane.slider_blue.preview);
- gtk_widget_realize(xsane.slider_blue.preview);
-
- xsane_draw_slider_level(&xsane.slider_gray);
- xsane_draw_slider_level(&xsane.slider_red);
- xsane_draw_slider_level(&xsane.slider_green);
- xsane_draw_slider_level(&xsane.slider_blue);
-
- xsane_separator_new(xsane_histogram_vbox, 0);
-
- xsane_create_histogram(xsane_histogram_vbox, FRAME_ENHANCED_IMAGE, 256, 100, &(xsane.histogram_enh));
-
- xsane_color_hbox = gtk_hbox_new(TRUE, 5);
- gtk_container_set_border_width(GTK_CONTAINER(xsane_color_hbox), 5);
- gtk_container_add(GTK_CONTAINER(xsane_histogram_vbox), xsane_color_hbox);
- gtk_widget_show(xsane_color_hbox);
-
- xsane_toggle_button_new_with_pixmap(xsane_color_hbox, intensity_xpm, DESC_HIST_INTENSITY,
- &xsane.histogram_int, xsane_histogram_toggle_button_callback);
- xsane_toggle_button_new_with_pixmap(xsane_color_hbox, red_xpm, DESC_HIST_RED,
- &xsane.histogram_red, xsane_histogram_toggle_button_callback);
- xsane_toggle_button_new_with_pixmap(xsane_color_hbox, green_xpm, DESC_HIST_GREEN,
- &xsane.histogram_green, xsane_histogram_toggle_button_callback);
- xsane_toggle_button_new_with_pixmap(xsane_color_hbox, blue_xpm, DESC_HIST_BLUE,
- &xsane.histogram_blue, xsane_histogram_toggle_button_callback);
- xsane_toggle_button_new_with_pixmap(xsane_color_hbox, pixel_xpm, DESC_HIST_PIXEL,
- &xsane.histogram_lines, xsane_histogram_toggle_button_callback);
- xsane_toggle_button_new_with_pixmap(xsane_color_hbox, log_xpm, DESC_HIST_LOG,
- &xsane.histogram_log, xsane_histogram_toggle_button_callback);
-
- gtk_widget_show(xsane_color_hbox);
-
-}
-
-/* ---------------------------------------------------------------------------------------------------------------------- */
-