/usr/include/gthumb-3.2/gthumb/gth-image-viewer.h is in gthumb-dev 3:3.3.1.is.3.2.7-0ubuntu1.
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/*
* GThumb
*
* Copyright (C) 2001-2009 The Free Software Foundation, Inc.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef GTH_IMAGE_VIEWER_H
#define GTH_IMAGE_VIEWER_H
#include <gtk/gtk.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include "gth-image.h"
typedef struct _GthImageViewer GthImageViewer;
#include "gth-image-viewer-tool.h"
G_BEGIN_DECLS
#define GTH_TYPE_IMAGE_VIEWER (gth_image_viewer_get_type ())
#define GTH_IMAGE_VIEWER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTH_TYPE_IMAGE_VIEWER, GthImageViewer))
#define GTH_IMAGE_VIEWER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTH_TYPE_IMAGE_VIEWER, GthImageViewerClass))
#define GTH_IS_IMAGE_VIEWER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTH_TYPE_IMAGE_VIEWER))
#define GTH_IS_IMAGE_VIEWER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTH_TYPE_IMAGE_VIEWER))
#define GTH_IMAGE_VIEWER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), GTH_TYPE_IMAGE_VIEWER, GthImageViewerClass))
typedef struct _GthImageViewerClass GthImageViewerClass;
typedef struct _GthImageViewerPrivate GthImageViewerPrivate;
#define GTH_IMAGE_VIEWER_FRAME_BORDER 1
#define GTH_IMAGE_VIEWER_FRAME_BORDER2 (GTH_IMAGE_VIEWER_FRAME_BORDER * 2)
typedef void (*GthImageViewerPaintFunc) (GthImageViewer *image_viewer,
cairo_t *cr,
gpointer user_data);
typedef enum {
GTH_ZOOM_QUALITY_HIGH = 0,
GTH_ZOOM_QUALITY_LOW
} GthZoomQuality;
typedef enum {
GTH_FIT_NONE = 0,
GTH_FIT_SIZE,
GTH_FIT_SIZE_IF_LARGER,
GTH_FIT_WIDTH,
GTH_FIT_WIDTH_IF_LARGER
} GthFit;
typedef enum {
GTH_ZOOM_CHANGE_ACTUAL_SIZE = 0,
GTH_ZOOM_CHANGE_KEEP_PREV,
GTH_ZOOM_CHANGE_FIT_SIZE,
GTH_ZOOM_CHANGE_FIT_SIZE_IF_LARGER,
GTH_ZOOM_CHANGE_FIT_WIDTH,
GTH_ZOOM_CHANGE_FIT_WIDTH_IF_LARGER
} GthZoomChange;
typedef enum {
GTH_TRANSP_TYPE_WHITE,
GTH_TRANSP_TYPE_NONE,
GTH_TRANSP_TYPE_BLACK,
GTH_TRANSP_TYPE_CHECKED
} GthTranspType;
typedef enum {
GTH_CHECK_TYPE_LIGHT,
GTH_CHECK_TYPE_MIDTONE,
GTH_CHECK_TYPE_DARK
} GthCheckType;
typedef enum {
GTH_CHECK_SIZE_SMALL = 4,
GTH_CHECK_SIZE_MEDIUM = 8,
GTH_CHECK_SIZE_LARGE = 16
} GthCheckSize;
struct _GthImageViewer
{
GtkWidget __parent;
GthImageViewerPrivate *priv;
/*< protected, used by the tools >*/
cairo_rectangle_int_t image_area;
int x_offset; /* Scroll offsets. */
int y_offset;
gboolean pressed;
int event_x_start;
int event_y_start;
int event_x_prev;
int event_y_prev;
gboolean dragging;
int drag_x_start;
int drag_y_start;
int drag_x_prev;
int drag_y_prev;
int drag_x;
int drag_y;
GtkAdjustment *vadj;
GtkAdjustment *hadj;
};
struct _GthImageViewerClass
{
GtkWidgetClass __parent_class;
/* -- Signals -- */
void (* clicked) (GthImageViewer *viewer);
void (* zoom_changed) (GthImageViewer *viewer);
/* -- Key binding signals -- */
void (*scroll) (GtkWidget *widget,
GtkScrollType x_scroll_type,
GtkScrollType y_scroll_type);
void (* zoom_in) (GthImageViewer *viewer);
void (* zoom_out) (GthImageViewer *viewer);
void (* set_zoom) (GthImageViewer *viewer,
gdouble zoom);
void (* set_fit_mode) (GthImageViewer *viewer,
GthFit fit_mode);
};
GType gth_image_viewer_get_type (void);
GtkWidget* gth_image_viewer_new (void);
/* viewer content. */
void gth_image_viewer_set_animation (GthImageViewer *viewer,
GdkPixbufAnimation *animation,
int original_width,
int original_height);
void gth_image_viewer_set_pixbuf (GthImageViewer *viewer,
GdkPixbuf *pixbuf,
int original_width,
int original_height);
void gth_image_viewer_set_surface (GthImageViewer *viewer,
cairo_surface_t *surface,
int original_width,
int original_height);
void gth_image_viewer_set_image (GthImageViewer *viewer,
GthImage *image,
int original_width,
int original_height);
void gth_image_viewer_set_better_quality (GthImageViewer *viewer,
GthImage *image,
int original_width,
int original_height);
void gth_image_viewer_set_void (GthImageViewer *viewer);
gboolean gth_image_viewer_is_void (GthImageViewer *viewer);
void gth_image_viewer_add_painter (GthImageViewer *viewer,
GthImageViewerPaintFunc
func,
gpointer user_data);
void gth_image_viewer_remove_painter (GthImageViewer *viewer,
GthImageViewerPaintFunc
func,
gpointer user_data);
/* image info. */
int gth_image_viewer_get_image_width (GthImageViewer *viewer);
int gth_image_viewer_get_image_height (GthImageViewer *viewer);
gboolean gth_image_viewer_get_has_alpha (GthImageViewer *viewer);
GdkPixbuf * gth_image_viewer_get_current_pixbuf (GthImageViewer *viewer);
cairo_surface_t *
gth_image_viewer_get_current_image (GthImageViewer *viewer);
void gth_image_viewer_get_original_size (GthImageViewer *viewer,
int *width,
int *height);
/* animation. */
void gth_image_viewer_start_animation (GthImageViewer *viewer);
void gth_image_viewer_stop_animation (GthImageViewer *viewer);
void gth_image_viewer_step_animation (GthImageViewer *viewer);
gboolean gth_image_viewer_is_animation (GthImageViewer *viewer);
gboolean gth_image_viewer_is_playing_animation (GthImageViewer *viewer);
/* zoom. */
void gth_image_viewer_set_zoom (GthImageViewer *viewer,
gdouble zoom);
gdouble gth_image_viewer_get_zoom (GthImageViewer *viewer);
void gth_image_viewer_set_zoom_quality (GthImageViewer *viewer,
GthZoomQuality quality);
GthZoomQuality gth_image_viewer_get_zoom_quality (GthImageViewer *viewer);
cairo_filter_t gth_image_viewer_get_zoom_quality_filter (GthImageViewer *viewer);
void gth_image_viewer_set_zoom_change (GthImageViewer *viewer,
GthZoomChange zoom_change);
GthZoomChange gth_image_viewer_get_zoom_change (GthImageViewer *viewer);
void gth_image_viewer_zoom_in (GthImageViewer *viewer);
void gth_image_viewer_zoom_out (GthImageViewer *viewer);
void gth_image_viewer_set_fit_mode (GthImageViewer *viewer,
GthFit fit_mode);
GthFit gth_image_viewer_get_fit_mode (GthImageViewer *viewer);
void gth_image_viewer_set_zoom_enabled (GthImageViewer *viewer,
gboolean value);
gboolean gth_image_viewer_get_zoom_enabled (GthImageViewer *viewer);
void gth_image_viewer_enable_zoom_with_keys (GthImageViewer *viewer,
gboolean value);
/* visualization options. */
void gth_image_viewer_set_transp_type (GthImageViewer *viewer,
GthTranspType transp_type);
GthTranspType gth_image_viewer_get_transp_type (GthImageViewer *viewer);
void gth_image_viewer_set_check_type (GthImageViewer *viewer,
GthCheckType check_type);
GthCheckType gth_image_viewer_get_check_type (GthImageViewer *viewer);
void gth_image_viewer_set_check_size (GthImageViewer *view,
GthCheckSize check_size);
GthCheckSize gth_image_viewer_get_check_size (GthImageViewer *viewer);
/* misc. */
void gth_image_viewer_clicked (GthImageViewer *viewer);
void gth_image_viewer_set_black_background (GthImageViewer *viewer,
gboolean set_black);
gboolean gth_image_viewer_is_black_background (GthImageViewer *viewer);
void gth_image_viewer_set_tool (GthImageViewer *viewer,
GthImageViewerTool *tool);
/* Scrolling. */
void gth_image_viewer_scroll_to (GthImageViewer *viewer,
int x_offset,
int y_offset);
void gth_image_viewer_scroll_to_center (GthImageViewer *viewer);
void gth_image_viewer_scroll_step_x (GthImageViewer *viewer,
gboolean increment);
void gth_image_viewer_scroll_step_y (GthImageViewer *viewer,
gboolean increment);
void gth_image_viewer_scroll_page_x (GthImageViewer *viewer,
gboolean increment);
void gth_image_viewer_scroll_page_y (GthImageViewer *viewer,
gboolean increment);
void gth_image_viewer_get_scroll_offset (GthImageViewer *viewer,
int *x,
int *y);
void gth_image_viewer_set_reset_scrollbars (GthImageViewer *viewer,
gboolean reset);
gboolean gth_image_viewer_get_reset_scrollbars (GthImageViewer *viewer);
void gth_image_viewer_needs_scrollbars (GthImageViewer *self,
GtkAllocation *allocation,
GtkWidget *hscrollbar,
GtkWidget *vscrollbar,
gboolean *hscrollbar_visible,
gboolean *vscrollbar_visible);
/* Cursor. */
void gth_image_viewer_show_cursor (GthImageViewer *viewer);
void gth_image_viewer_hide_cursor (GthImageViewer *viewer);
void gth_image_viewer_set_cursor (GthImageViewer *viewer,
GdkCursor *cursor);
gboolean gth_image_viewer_is_cursor_visible (GthImageViewer *viewer);
/* Frame. */
void gth_image_viewer_show_frame (GthImageViewer *viewer);
void gth_image_viewer_hide_frame (GthImageViewer *viewer);
gboolean gth_image_viewer_is_frame_visible (GthImageViewer *viewer);
/*< protected, used by the tools >*/
void gth_image_viewer_paint (GthImageViewer *viewer,
cairo_t *cr,
cairo_surface_t *surface,
int src_x,
int src_y,
int dest_x,
int dest_y,
int width,
int height,
cairo_filter_t filter);
void gth_image_viewer_paint_region (GthImageViewer *viewer,
cairo_t *cr,
cairo_surface_t *surface,
int src_x,
int src_y,
cairo_rectangle_int_t *pixbuf_area,
cairo_region_t *region,
cairo_filter_t filter);
void gth_image_viewer_paint_background (GthImageViewer *self,
cairo_t *cr);
void gth_image_viewer_apply_painters (GthImageViewer *image_viewer,
cairo_t *cr);
void gth_image_viewer_crop_area (GthImageViewer *viewer,
cairo_rectangle_int_t *area);
G_END_DECLS
#endif /* GTH_IMAGE_VIEWER_H */
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