1 /* 2 * Copyright (C) 2002 2003 2004, Magnus Hjorth 3 * 4 * This file is part of mhWaveEdit. 5 * 6 * mhWaveEdit is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * mhWaveEdit is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with mhWaveEdit; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA 19 */ 20 21 22 /* ChunkView is a graphical component that gives a view of the data inside a 23 * chunk object. 24 */ 25 26 #ifndef CHUNKVIEW_H_INCLUDED 27 #define CHUNKVIEW_H_INCLUDED 28 29 #include <gtk/gtk.h> 30 #include "chunk.h" 31 #include "document.h" 32 #include "viewcache.h" 33 34 #define CHUNKVIEW(obj) GTK_CHECK_CAST (obj, chunk_view_get_type(), ChunkView) 35 #define CHUNKVIEW_CLASS(klass) GTK_CHECK_CLASS_CAST(klass,chunk_view_get_type(),ChunkViewClass) 36 #define IS_CHUNKVIEW(obj) GTK_CHECK_TYPE (obj,chunk_view_get_type()) 37 38 39 typedef struct _ChunkView { 40 41 /* PRIVATE MEMBERS - Keep out! */ 42 43 GtkDrawingArea parent; 44 45 /* Image used for double-buffering the sample view. Only used under GTK2, 46 * however the image_width/image_height variables are used at various 47 * places so they are kept updated (ugly solution) */ 48 GdkPixmap *image; 49 guint image_width,image_height; 50 51 52 ViewCache *cache; 53 int last_redraw_time,need_redraw_left,need_redraw_right; 54 55 gfloat scale_factor; /* Vertical scaling factor (default: 1.0) */ 56 57 /* READ-ONLY PUBLIC MEMBERS */ 58 /* To change these, use the public functions below. */ 59 60 Document *doc; 61 gboolean timescale; /* Time scale visible flag */ 62 gboolean show_bufpos; 63 64 } ChunkView; 65 66 typedef struct _ChunkViewClass { 67 GtkDrawingAreaClass parent_class; 68 69 /* SIGNALS */ 70 71 /* Emitted when the user double-clicked somewhere in the view */ 72 /* The off_t pointer is because off_t values aren't directly supported by 73 * the GTK (1.2) type system */ 74 void (*double_click)(ChunkView *view, off_t *sample); 75 76 } ChunkViewClass; 77 78 GtkType chunk_view_get_type(void); 79 80 81 /* Creates a new ChunkView */ 82 GtkWidget *chunk_view_new(void); 83 84 85 void chunk_view_set_document(ChunkView *cv, Document *d); 86 87 88 /* Selects whether a time scale should be drawn at the bottom of the view. */ 89 void chunk_view_set_timescale(ChunkView *cv, gboolean scale_visible); 90 91 92 /* This is called when the caches should progress. */ 93 94 gboolean chunk_view_update_cache(ChunkView *cv); 95 96 void chunk_view_force_repaint(ChunkView *cv); 97 98 void chunk_view_use_backing_pixmap(ChunkView *cv, gboolean use_pixmap); 99 100 void chunk_view_set_scale(ChunkView *cv, gfloat scale); 101 102 #endif 103