summaryrefslogtreecommitdiff
path: root/desktop/gui.h
blob: 50e8c67d9757172239aac90f50fdf70a13ceb9ad (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
/*
 * Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
 * Copyright 2004 James Bursa <bursa@users.sourceforge.net>
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf 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; version 2 of the License.
 *
 * NetSurf 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/>.
 */

/** \file
 * Interface to platform-specific gui functions.
 */

#ifndef _NETSURF_DESKTOP_GUI_H_
#define _NETSURF_DESKTOP_GUI_H_

#include <stdbool.h>

#include <libwapcaplet/libwapcaplet.h>
#include <libcss/libcss.h>

#include "utils/config.h"
#include "content/hlcache.h"
#include "desktop/download.h"
#include "desktop/mouse.h"
#include "desktop/search.h"
#include "utils/errors.h"

typedef enum {
	GUI_SAVE_SOURCE,
	GUI_SAVE_DRAW,
	GUI_SAVE_PDF,
	GUI_SAVE_TEXT,
	GUI_SAVE_COMPLETE,
	GUI_SAVE_OBJECT_ORIG,
	GUI_SAVE_OBJECT_NATIVE,
	GUI_SAVE_LINK_URI,
	GUI_SAVE_LINK_URL,
	GUI_SAVE_LINK_TEXT,
	GUI_SAVE_HOTLIST_EXPORT_HTML,
	GUI_SAVE_HISTORY_EXPORT_HTML,
	GUI_SAVE_TEXT_SELECTION,
	GUI_SAVE_CLIPBOARD_CONTENTS
} gui_save_type;

typedef enum {
	GDRAGGING_NONE,
	GDRAGGING_SCROLLBAR,
	GDRAGGING_SELECTION,
	GDRAGGING_OTHER
} gui_drag_type;

struct gui_window;
struct gui_download_window;
struct browser_window;
struct form_control;

/** Graphical user interface window function table
 *
 * function table implementing window operations
 */
struct gui_window_table {

	/* Mandantory entries */

	/** create a gui window for a browsing context */
	struct gui_window *(*create)(struct browser_window *bw, struct browser_window *clone, bool new_tab);

	/** destroy previously created gui window */
	void (*destroy)(struct gui_window *g);

	/**
	 * Force a redraw of the entire contents of a window.
	 *
	 * @todo this API should be merged with update.
	 *
	 * \param g gui_window to redraw
	 */
	void (*redraw)(struct gui_window *g);

	/**
	 * Redraw an area of a window.
	 *
	 * \param g gui_window
	 * \param rect area to redraw
	 */
	void (*update)(struct gui_window *g, const struct rect *rect);

	/**
	 * Get the scroll position of a browser window.
	 *
	 * \param  g   gui_window
	 * \param  sx  receives x ordinate of point at top-left of window
	 * \param  sy  receives y ordinate of point at top-left of window
	 * \return true iff successful
	 */
	bool (*get_scroll)(struct gui_window *g, int *sx, int *sy);

	/**
	 * Set the scroll position of a browser window.
	 *
	 * \param  g   gui_window to scroll
	 * \param  sx  point to place at top-left of window
	 * \param  sy  point to place at top-left of window
	 */
	void (*set_scroll)(struct gui_window *g, int sx, int sy);

	/**
	 * Find the current dimensions of a browser window's content area.
	 *
	 * @todo The implementations of this are buggy and its only
	 * used from frames code.
	 *
	 * \param g	 gui_window to measure
	 * \param width	 receives width of window
	 * \param height receives height of window
	 * \param scaled whether to return scaled values
	 */
	void (*get_dimensions)(struct gui_window *g, int *width, int *height, bool scaled);

	/**
	 * Update the extent of the inside of a browser window to that of the
	 * current content.
	 *
	 * @todo this is used to update scroll bars does it need
	 * renaming? some frontends (windows) do not even implement it.
	 *
	 * \param  g gui_window to update the extent of
	 */
	void (*update_extent)(struct gui_window *g);



	/* Optional entries */

	/**
	 * Set the title of a window.
	 *
	 * \param  g	  window to update
	 * \param  title  new window title
	 */
	void (*set_title)(struct gui_window *g, const char *title);

	/** set the navigation url. */
	void (*set_url)(struct gui_window *g, const char *url);

	/** set favicon */
	void (*set_icon)(struct gui_window *g, hlcache_handle *icon);

	/**
	 * Set the status bar of a browser window.
	 *
	 * \param  g	 gui_window to update
	 * \param  text  new status text
	 */
	void (*set_status)(struct gui_window *g, const char *text);

	/**
	 * Change mouse pointer shape
	 */
	void (*set_pointer)(struct gui_window *g, gui_pointer_shape shape);

	/**
	 * Place the caret in a browser window.
	 *
	 * \param  g	   window with caret
	 * \param  x	   coordinates of caret
	 * \param  y	   coordinates of caret
	 * \param  height  height of caret
	 * \param  clip	   clip rectangle, or NULL if none
	 */
	void (*place_caret)(struct gui_window *g, int x, int y, int height, const struct rect *clip);

	/**
	 * Remove the caret, if present.
	 *
	 * \param  g	   window with caret
	 */
	void (*remove_caret)(struct gui_window *g);

	/** start the navigation throbber. */
	void (*start_throbber)(struct gui_window *g);

	/** stop the navigation throbber. */
	void (*stop_throbber)(struct gui_window *g);

	/** start a drag operation within a window */
	bool (*drag_start)(struct gui_window *g, gui_drag_type type, const struct rect *rect);

	/** save link operation */
	void (*save_link)(struct gui_window *g, const char *url, const char *title);

	/**
	 * Scrolls the specified area of a browser window into view.
	 *
	 * @todo investigate if this can be merged with set_scroll
	 * which is what the default implementation used by most
	 * toolkits uses.
	 *
	 * \param  g   gui_window to scroll
	 * \param  x0  left point to ensure visible
	 * \param  y0  bottom point to ensure visible
	 * \param  x1  right point to ensure visible
	 * \param  y1  top point to ensure visible
	 */
	void (*scroll_visible)(struct gui_window *g, int x0, int y0, int x1, int y1);

	/**
	 * Starts drag scrolling of a browser window
	 *
	 * \param g the window to scroll
	 */
	bool (*scroll_start)(struct gui_window *g);

	/**
	 * Called when the gui_window has new content.
	 *
	 * \param  g  the gui_window that has new content
	 */
	void (*new_content)(struct gui_window *g);

	/**
	 * Called when file chooser gadget is activated
	 */
	void (*file_gadget_open)(struct gui_window *g, hlcache_handle *hl, struct form_control *gadget);

	/** object dragged to window*/
	void (*drag_save_object)(struct gui_window *g, hlcache_handle *c, gui_save_type type);

	/** drag selection save */
	void (*drag_save_selection)(struct gui_window *g, const char *selection);

	/** selection started */
	void (*start_selection)(struct gui_window *g);
};

/**
 * function table for download windows
 */
struct gui_download_table {
	struct gui_download_window *(*create)(download_context *ctx, struct gui_window *parent);

	nserror (*data)(struct gui_download_window *dw,	const char *data, unsigned int size);

	void (*error)(struct gui_download_window *dw, const char *error_msg);

	void (*done)(struct gui_download_window *dw);
};

/** Graphical user interface function table
 *
 * function table implementing GUI interface to browser core
 */
struct gui_table {

	/* sub tables */

	/** Window sub table */
	struct gui_window_table *window;

	/** Downlaod sub table */
	struct gui_download_table *download;

	/* Mandantory entries */

	/** called to let the frontend update its state and run any
	 * I/O operations.
	 */
	void (*poll)(bool active);


	/* Optional entries */

	/** called to allow the gui to cleanup */
	void (*quit)(void);

	/**
	 * set gui display of a retrieved favicon representing the
	 * search provider
	 *
	 * \param ico may be NULL for local calls; then access current
	 * cache from search_web_ico()
	 */
	void (*set_search_ico)(hlcache_handle *ico);
};

extern struct gui_table *guit; /* the gui vtable */



/**
 * Callback to translate resource to full url.
 *
 * Transforms a resource: path into a full URL. The returned URL
 * is used as the target for a redirect. The caller takes ownership of
 * the returned nsurl including unrefing it when finished with it.
 *
 * \param path The path of the resource to locate.
 * \return A string containing the full URL of the target object or
 *         NULL if no suitable resource can be found.
 */
nsurl* gui_get_resource_url(const char *path);


void gui_launch_url(const char *url);

void gui_create_form_select_menu(struct browser_window *bw,
		struct form_control *control);

/**
 * Core asks front end for clipboard contents.
 *
 * \param  buffer  UTF-8 text, allocated by front end, ownership yeilded to core
 * \param  length  Byte length of UTF-8 text in buffer
 */
void gui_get_clipboard(char **buffer, size_t *length);

typedef struct nsnsclipboard_styles {
	size_t start;			/**< Start of run */

	plot_font_style_t style;	/**< Style to give text run */
} nsclipboard_styles;

/**
 * Core tells front end to put given text in clipboard
 *
 * \param  buffer    UTF-8 text, owned by core
 * \param  length    Byte length of UTF-8 text in buffer
 * \param  styles    Array of styles given to text runs, owned by core, or NULL
 * \param  n_styles  Number of text run styles in array
 */
void gui_set_clipboard(const char *buffer, size_t length,
		nsclipboard_styles styles[], int n_styles);



struct ssl_cert_info;

void gui_cert_verify(nsurl *url, const struct ssl_cert_info *certs,
		unsigned long num, nserror (*cb)(bool proceed, void *pw),
		void *cbpw);


#endif