src/xournal.h

   1 #include <gtk/gtk.h>
   2 #include <libgnomecanvas/libgnomecanvas.h>
   3 #include <poppler/glib/poppler.h>
   4
   5 // #define INPUT_DEBUG
   6 /* uncomment this line if you experience event-processing problems
   7    and want to list the input events received by xournal. Caution, lots
   8    of output (redirect to a file). */
   9
  10 #define ENABLE_XINPUT_BUGFIX
  11 /* comment out this line if you are experiencing calibration problems with
  12    XInput and want to try things differently. This will probably break
  13    on-the-fly display rotation after application startup, though. */
  14
  15 #define FILE_DIALOG_SIZE_BUGFIX
  16 /* ugly, but should help users with versions of GTK+ that suffer from the
  17    "tiny file dialog" syndrome, without hurting those with well-behaved
  18    versions of GTK+. Comment out if you'd prefer not to include this fix. */
  19
  20 // PREF FILES INFO
  21
  22 #define CONFIG_DIR ".xournal"
  23 #define MRU_FILE "recent-files"
  24 #define MRU_SIZE 8
  25 #define CONFIG_FILE "config"
  26
  27 // version string for about box
  28
  29 #ifdef WIN32
  30 #define VERSION_STRING VERSION "-win32"
  31 #else
  32 #define VERSION_STRING VERSION
  33 #endif
  34
  35 // DATA STRUCTURES AND CONSTANTS
  36
  37 #define PIXEL_MOTION_THRESHOLD 0.3
  38 #define MAX_AXES 12
  39 #define EPSILON 1E-7
  40 #define MAX_ZOOM 20.0
  41 #define DISPLAY_DPI_DEFAULT 96.0
  42 #define MIN_ZOOM 0.2
  43 #define RESIZE_MARGIN 6.0
  44 #define MAX_SAFE_RENDER_DPI 720 // max dpi at which PDF bg's get rendered
  45
  46 #define VBOX_MAIN_NITEMS 5 // number of interface items in vboxMain
  47
  48 /* a string (+ aux data) that maintains a refcount */
  49
  50 typedef struct Refstring {
  51   int nref;
  52   char *s;
  53   gpointer aux;
  54 } Refstring;
  55
  56
  57 /* The journal is mostly a list of pages. Each page is a list of layers,
  58    and a background. Each layer is a list of items, from bottom to top.
  59 */
  60
  61 typedef struct Background {
  62   int type;
  63   GnomeCanvasItem *canvas_item;
  64   int color_no;
  65   guint color_rgba;
  66   int ruling;
  67   GdkPixbuf *pixbuf;
  68   Refstring *filename;
  69   int file_domain;
  70   int file_page_seq;
  71   double pixbuf_scale; // for PIXMAP, this is the *current* zoom value
  72                        // for PDF, this is the *requested* zoom value
  73   int pixel_height, pixel_width; // PDF only: pixel size of current pixbuf
  74 } Background;
  75
  76 #define BG_SOLID 0
  77 #define BG_PIXMAP 1
  78 #define BG_PDF 2      // not implemented yet
  79
  80 #define RULING_NONE 0
  81 #define RULING_LINED 1
  82 #define RULING_RULED 2
  83 #define RULING_GRAPH 3
  84
  85 #define DOMAIN_ABSOLUTE 0
  86 #define DOMAIN_ATTACH 1
  87 #define DOMAIN_CLONE 2  // only while loading file
  88
  89 typedef struct Brush {
  90   int tool_type;
  91   int color_no;
  92   guint color_rgba;
  93   int thickness_no;
  94   double thickness;
  95   int tool_options;
  96   gboolean ruler, recognizer, variable_width;
  97 } Brush;
  98
  99 #define COLOR_BLACK      0
 100 #define COLOR_BLUE       1
 101 #define COLOR_RED        2
 102 #define COLOR_GREEN      3
 103 #define COLOR_GRAY       4
 104 #define COLOR_LIGHTBLUE  5
 105 #define COLOR_LIGHTGREEN 6
 106 #define COLOR_MAGENTA    7
 107 #define COLOR_ORANGE     8
 108 #define COLOR_YELLOW     9
 109 #define COLOR_WHITE     10
 110 #define COLOR_OTHER     -1
 111 #define COLOR_MAX       11
 112
 113 extern guint predef_colors_rgba[COLOR_MAX];
 114 extern guint predef_bgcolors_rgba[COLOR_MAX];
 115
 116 #define THICKNESS_VERYFINE  0
 117 #define THICKNESS_FINE      1
 118 #define THICKNESS_MEDIUM    2
 119 #define THICKNESS_THICK     3
 120 #define THICKNESS_VERYTHICK 4
 121 #define THICKNESS_MAX       5
 122
 123 #define TOOL_PEN          0
 124 #define TOOL_ERASER       1
 125 #define TOOL_HIGHLIGHTER  2
 126 #define TOOL_TEXT         3
 127 #define TOOL_SELECTREGION 4
 128 #define TOOL_SELECTRECT   5
 129 #define TOOL_VERTSPACE    6
 130 #define TOOL_HAND         7
 131 #define NUM_STROKE_TOOLS  3
 132 #define NUM_TOOLS         8
 133 #define NUM_BUTTONS       3
 134
 135 #define TOOLOPT_ERASER_STANDARD     0
 136 #define TOOLOPT_ERASER_WHITEOUT     1
 137 #define TOOLOPT_ERASER_STROKES      2
 138
 139 extern double predef_thickness[NUM_STROKE_TOOLS][THICKNESS_MAX];
 140
 141 typedef struct BBox {
 142   double left, right, top, bottom;
 143 } BBox;
 144
 145 struct UndoErasureData;
 146
 147 typedef struct Item {
 148   int type;
 149   struct Brush brush; // the brush to use, if ITEM_STROKE
 150   // 'brush' also contains color info for text items
 151   GnomeCanvasPoints *path;
 152   gdouble *widths;
 153   GnomeCanvasItem *canvas_item; // the corresponding canvas item, or NULL
 154   struct BBox bbox;
 155   struct UndoErasureData *erasure; // for temporary use during erasures
 156   // the following fields for ITEM_TEXT:
 157   gchar *text;
 158   gchar *font_name;
 159   gdouble font_size;
 160   GtkWidget *widget; // the widget while text is being edited (ITEM_TEMP_TEXT)
 161 } Item;
 162
 163 // item type values for Item.type, UndoItem.type, ui.cur_item_type ...
 164 // (not all are valid in all places)
 165 #define ITEM_NONE -1
 166 #define ITEM_STROKE 0
 167 #define ITEM_TEMP_STROKE 1
 168 #define ITEM_ERASURE 2
 169 #define ITEM_SELECTRECT 3
 170 #define ITEM_MOVESEL 4
 171 #define ITEM_PASTE 5
 172 #define ITEM_NEW_LAYER 6
 173 #define ITEM_DELETE_LAYER 7
 174 #define ITEM_NEW_BG_ONE 8
 175 #define ITEM_NEW_BG_RESIZE 9
 176 #define ITEM_PAPER_RESIZE 10
 177 #define ITEM_NEW_DEFAULT_BG 11
 178 #define ITEM_NEW_PAGE 13
 179 #define ITEM_DELETE_PAGE 14
 180 #define ITEM_REPAINTSEL 15
 181 #define ITEM_MOVESEL_VERT 16
 182 #define ITEM_HAND 17
 183 #define ITEM_TEXT 18
 184 #define ITEM_TEMP_TEXT 19
 185 #define ITEM_TEXT_EDIT 20
 186 #define ITEM_TEXT_ATTRIB 21
 187 #define ITEM_RESIZESEL 22
 188 #define ITEM_RECOGNIZER 23
 189
 190 typedef struct Layer {
 191   GList *items; // the items on the layer, from bottom to top
 192   int nitems;
 193   GnomeCanvasGroup *group;
 194 } Layer;
 195
 196 typedef struct Page {
 197   GList *layers; // the layers on the page
 198   int nlayers;
 199   double height, width;
 200   double hoffset, voffset; // offsets of canvas group rel. to canvas root
 201   struct Background *bg;
 202   GnomeCanvasGroup *group;
 203 } Page;
 204
 205 typedef struct Journal {
 206   GList *pages;  // the pages in the journal
 207   int npages;
 208   int last_attach_no; // for naming of attached backgrounds
 209 } Journal;
 210
 211 typedef struct Selection {
 212   int type;  // ITEM_SELECTRECT, ITEM_MOVESEL_VERT
 213   BBox bbox; // the rectangle bbox of the selection
 214   struct Layer *layer; // the layer on which the selection lives
 215   double anchor_x, anchor_y, last_x, last_y; // for selection motion
 216   gboolean resizing_top, resizing_bottom, resizing_left, resizing_right; // for selection resizing
 217   double new_x1, new_x2, new_y1, new_y2; // for selection resizing
 218   GnomeCanvasItem *canvas_item; // if the selection box is on screen
 219   GList *items; // the selected items (a list of struct Item)
 220   int move_pageno, orig_pageno; // if selection moves to a different page
 221   struct Layer *move_layer;
 222   float move_pagedelta;
 223 } Selection;
 224
 225 typedef struct UIData {
 226   int pageno, layerno; // the current page and layer
 227   struct Page *cur_page;
 228   struct Layer *cur_layer;
 229   gboolean saved; // is file saved ?
 230   struct Brush *cur_brush;  // the brush in use (one of brushes[...])
 231   int toolno[NUM_BUTTONS+1];  // the number of the currently selected tool
 232   struct Brush brushes[NUM_BUTTONS+1][NUM_STROKE_TOOLS]; // the current pen, eraser, hiliter
 233   struct Brush default_brushes[NUM_STROKE_TOOLS]; // the default ones
 234   int linked_brush[NUM_BUTTONS+1]; // whether brushes are linked across buttons
 235   int cur_mapping; // the current button number for mappings
 236   gboolean button_switch_mapping; // button clicks switch button 1 mappings
 237   gboolean use_erasertip;
 238   int which_mouse_button; // the mouse button drawing the current path
 239   int which_unswitch_button; // if button_switch_mapping, the mouse button that switched the mapping
 240   struct Page default_page;  // the model for the default page
 241   int layerbox_length;  // the number of entries registered in the layers combo-box
 242   struct Item *cur_item; // the item being drawn, or NULL
 243   int cur_item_type;
 244   GnomeCanvasPoints cur_path; // the path being drawn
 245   gdouble *cur_widths; // width array for the path being drawn
 246   int cur_path_storage_alloc;
 247   int cur_widths_storage_alloc;
 248   double zoom; // zoom factor, in pixels per pt
 249   gboolean use_xinput; // use input devices instead of core pointer
 250   gboolean allow_xinput; // allow use of xinput ?
 251   gboolean discard_corepointer; // discard core pointer events in XInput mode
 252   gboolean pressure_sensitivity; // use pen pressure to control stroke width?
 253   double width_minimum_multiplier, width_maximum_multiplier; // calibration for pressure sensitivity
 254   gboolean is_corestroke; // this stroke is painted with core pointer
 255   gboolean saved_is_corestroke;
 256   GdkDevice *stroke_device; // who's painting this stroke
 257   int screen_width, screen_height; // initial screen size, for XInput events
 258   double hand_refpt[2];
 259   int hand_scrollto_cx, hand_scrollto_cy;
 260   gboolean hand_scrollto_pending;
 261   char *filename;
 262   gchar *default_path; // default path for new notes
 263   gboolean view_continuous, fullscreen, maximize_at_start;
 264   gboolean in_update_page_stuff; // semaphore to avoid scrollbar retroaction
 265   struct Selection *selection;
 266   GdkCursor *cursor;
 267   gboolean progressive_bg; // update PDF bg's one at a time
 268   char *mrufile, *configfile; // file names for MRU & config
 269   char *mru[MRU_SIZE]; // MRU data
 270   GtkWidget *mrumenu[MRU_SIZE];
 271   gboolean bg_apply_all_pages;
 272   int window_default_width, window_default_height, scrollbar_step_increment;
 273   gboolean print_ruling; // print the paper ruling ?
 274   int default_unit; // the default unit for paper sizes
 275   int startuptool; // the default tool at startup
 276   int zoom_step_increment; // the increment in the zoom dialog box
 277   double zoom_step_factor; // the multiplicative factor in zoom in/out
 278   double startup_zoom;
 279   gboolean autoload_pdf_xoj;
 280 #if GLIB_CHECK_VERSION(2,6,0)
 281   GKeyFile *config_data;
 282 #endif
 283   int vertical_order[2][VBOX_MAIN_NITEMS]; // the order of interface components
 284   gchar *default_font_name, *font_name;
 285   gdouble default_font_size, font_size;
 286   gulong resize_signal_handler;
 287   gdouble hiliter_opacity;
 288   guint hiliter_alpha_mask;
 289   gboolean left_handed; // left-handed mode?
 290   gboolean auto_save_prefs; // auto-save preferences ?
 291   gboolean shorten_menus; // shorten menus ?
 292   gchar *shorten_menu_items; // which items to hide
 293   gboolean is_sel_cursor; // displaying a selection-related cursor
 294   gint pre_fullscreen_width, pre_fullscreen_height; // for win32 fullscreen
 295 #if GTK_CHECK_VERSION(2,10,0)
 296   GtkPrintSettings *print_settings;
 297 #endif
 298 } UIData;
 299
 300 #define BRUSH_LINKED 0
 301 #define BRUSH_COPIED 1
 302 #define BRUSH_STATIC 2
 303
 304 typedef struct UndoErasureData {
 305   struct Item *item; // the item that got erased
 306   int npos; // its position in its layer
 307   int nrepl; // the number of replacement items
 308   GList *replacement_items;
 309 } UndoErasureData;
 310
 311 typedef struct UndoItem {
 312   int type;
 313   struct Item *item; // for ITEM_STROKE, ITEM_TEXT, ITEM_TEXT_EDIT, ITEM_TEXT_ATTRIB
 314   struct Layer *layer; // for ITEM_STROKE, ITEM_ERASURE, ITEM_PASTE, ITEM_NEW_LAYER, ITEM_DELETE_LAYER, ITEM_MOVESEL, ITEM_TEXT, ITEM_TEXT_EDIT, ITEM_RECOGNIZER
 315   struct Layer *layer2; // for ITEM_DELETE_LAYER with val=-1, ITEM_MOVESEL
 316   struct Page *page;  // for ITEM_NEW_BG_ONE/RESIZE, ITEM_NEW_PAGE, ITEM_NEW_LAYER, ITEM_DELETE_LAYER, ITEM_DELETE_PAGE
 317   GList *erasurelist; // for ITEM_ERASURE, ITEM_RECOGNIZER
 318   GList *itemlist;  // for ITEM_MOVESEL, ITEM_PASTE, ITEM_REPAINTSEL, ITEM_RESIZESEL
 319   GList *auxlist;   // for ITEM_REPAINTSEL (brushes), ITEM_MOVESEL (depths)
 320   struct Background *bg;  // for ITEM_NEW_BG_ONE/RESIZE, ITEM_NEW_DEFAULT_BG
 321   int val; // for ITEM_NEW_PAGE, ITEM_NEW_LAYER, ITEM_DELETE_LAYER, ITEM_DELETE_PAGE
 322   double val_x, val_y; // for ITEM_MOVESEL, ITEM_NEW_BG_RESIZE, ITEM_PAPER_RESIZE, ITEM_NEW_DEFAULT_BG, ITEM_TEXT_ATTRIB, ITEM_RESIZESEL
 323   double scaling_x, scaling_y; // for ITEM_RESIZESEL
 324   gchar *str; // for ITEM_TEXT_EDIT, ITEM_TEXT_ATTRIB
 325   struct Brush *brush; // for ITEM_TEXT_ATTRIB
 326   struct UndoItem *next;
 327   int multiop;
 328 } UndoItem;
 329
 330 #define MULTIOP_CONT_REDO 1 // not the last in a multiop, so keep redoing
 331 #define MULTIOP_CONT_UNDO 2 // not the first in a multiop, so keep undoing
 332
 333
 334 typedef struct BgPdfRequest {
 335   int pageno;
 336   double dpi;
 337 } BgPdfRequest;
 338
 339 typedef struct BgPdfPage {
 340   double dpi;
 341   GdkPixbuf *pixbuf;
 342   int pixel_height, pixel_width; // pixel size of pixbuf
 343 } BgPdfPage;
 344
 345 typedef struct BgPdf {
 346   int status; // the rest only makes sense if this is not STATUS_NOT_INIT
 347   guint pid; // the identifier of the idle callback
 348   Refstring *filename;
 349   int file_domain;
 350   gchar *file_contents; // buffer containing a copy of file data
 351   gsize file_length;  // size of above buffer
 352   int npages;
 353   GList *pages; // a list of BgPdfPage structures
 354   GList *requests; // a list of BgPdfRequest structures
 355   gboolean has_failed; // has failed in the past...
 356   PopplerDocument *document; // the poppler document
 357 } BgPdf;
 358
 359 #define STATUS_NOT_INIT 0
 360 #define STATUS_READY    1  // things are initialized and can work
 361 // there used to be more possible values, things got streamlined...
 362
 363 // UTILITY MACROS
 364
 365 // getting a component of the interface by name
 366 #define GET_COMPONENT(a)  GTK_WIDGET (g_object_get_data(G_OBJECT (winMain), a))
 367
 368 // the margin between consecutive pages in continuous view
 369 #define VIEW_CONTINUOUS_SKIP 20.0
 370
 371
 372 // GLOBAL VARIABLES
 373
 374 // the main window and the canvas
 375
 376 extern GtkWidget *winMain;
 377 extern GnomeCanvas *canvas;
 378
 379 // the data
 380
 381 extern struct Journal journal;
 382 extern struct UIData ui;
 383 extern struct BgPdf bgpdf;
 384 extern struct UndoItem *undo, *redo;
 385
 386 extern double DEFAULT_ZOOM;
 387
 388 #define UNIT_CM 0
 389 #define UNIT_IN 1
 390 #define UNIT_PX 2
 391 #define UNIT_PT 3