summaryrefslogtreecommitdiffstats
path: root/apps/gui/viewport.c
blob: cf81f7d009ffd70e5d39730323b6e03513f0cc25 (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
/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2008 by Jonathan Gordon
 *
 * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/

#include <stdlib.h>
#include "config.h"
#include "lcd.h"
#ifdef HAVE_REMOTE_LCD
#include "lcd-remote.h"
#endif
#include "font.h"
#include "viewport.h"
#include "screen_access.h"
#include "settings.h"
#include "misc.h"
#include "list.h"

/*some short cuts for fg/bg/line selector handling */
#ifdef HAVE_LCD_COLOR
#define FG_FALLBACK global_settings.fg_color
#define BG_FALLBACK global_settings.bg_color
#else
#define FG_FALLBACK LCD_DEFAULT_FG
#define BG_FALLBACK LCD_DEFAULT_BG
#endif
#ifdef HAVE_REMOTE_LCD
#define REMOTE_FG_FALLBACK LCD_REMOTE_DEFAULT_FG
#define REMOTE_BG_FALLBACK LCD_REMOTE_DEFAULT_BG
#endif

/* all below isn't needed for pc tools (i.e. checkwps/wps editor)
 * only viewport_parse_viewport() is */
#ifndef __PCTOOL__
#include "string.h"
#include "kernel.h"
#include "system.h"
#include "statusbar.h"
#include "appevents.h"
#include "panic.h"
#include "language.h"
#include "statusbar-skinned.h"
#include "skin_engine/skin_engine.h"
#include "debug.h"

#define VPSTACK_DEPTH 16
struct viewport_stack_item
{
    struct  viewport* vp;
    bool   enabled;
};

static void viewportmanager_redraw(unsigned short id, void* data);

static int theme_stack_top[NB_SCREENS]; /* the last item added */
static struct viewport_stack_item theme_stack[NB_SCREENS][VPSTACK_DEPTH];
static bool is_theme_enabled(enum screen_type screen);

static void evt_toggle(bool enable, unsigned short id,
                         void (*handler)(unsigned short id, void *data))
{
    if (enable)
        add_event(id, handler);
    else
        remove_event(id, handler);
}

static void toggle_events(bool enable)
{
    evt_toggle(enable, GUI_EVENT_ACTIONUPDATE, viewportmanager_redraw);
    evt_toggle(enable, PLAYBACK_EVENT_TRACK_CHANGE, do_sbs_update_callback);
    evt_toggle(enable, PLAYBACK_EVENT_NEXTTRACKID3_AVAILABLE, do_sbs_update_callback);
#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP)
    evt_toggle(enable, LCD_EVENT_ACTIVATION, do_sbs_update_callback);
#endif
}

static void set_clear_update_valid_vp(enum screen_type screen, struct viewport *vp)
{
    if (vp->width && vp->height)
    {
        screens[screen].set_viewport(vp);
        screens[screen].clear_viewport();
        screens[screen].update_viewport();
    }
}

static void toggle_theme(enum screen_type screen, bool force)
{
    bool enable_event = false;
    static bool was_enabled[NB_SCREENS] = {false};
    static bool after_boot[NB_SCREENS] = {false};
    struct viewport *last_vp;

    FOR_NB_SCREENS(i)
    {
        enable_event = enable_event || is_theme_enabled(i);
        sb_set_title_text(NULL, Icon_NOICON, i);
    }
    toggle_events(enable_event);

    if (is_theme_enabled(screen))
    {
        last_vp = screens[screen].set_viewport(NULL);
        bool first_boot = theme_stack_top[screen] == 0;
        /* remove the left overs from the previous screen.
         * could cause a tiny flicker. Redo your screen code if that happens */
#ifdef HAVE_BACKDROP_IMAGE
        skin_backdrop_show(sb_get_backdrop(screen));
#endif
        if (LIKELY(after_boot[screen]) && (!was_enabled[screen] || force))
        {
            struct viewport deadspace, user;
            viewport_set_defaults(&user, screen);
            deadspace = user; /* get colours and everything */
            /* above */
            deadspace.x = 0;
            deadspace.y = 0;
            deadspace.width = screens[screen].lcdwidth;
            deadspace.height = user.y;
            set_clear_update_valid_vp(screen, &deadspace);
            /* below */
            deadspace.y = user.y + user.height;
            deadspace.height = screens[screen].lcdheight - deadspace.y;
            set_clear_update_valid_vp(screen, &deadspace);
            /* left */
            deadspace.x = 0;
            deadspace.y = 0;
            deadspace.width = user.x;
            deadspace.height = screens[screen].lcdheight;
            set_clear_update_valid_vp(screen, &deadspace);
            /* below */
            deadspace.x = user.x + user.width;
            deadspace.width = screens[screen].lcdwidth - deadspace.x;
            set_clear_update_valid_vp(screen, &deadspace);

            screens[screen].set_viewport(last_vp);
        }
        intptr_t force = first_boot?0:1;

        send_event(GUI_EVENT_ACTIONUPDATE, (void*)force);
    }
    else
    {
#if LCD_DEPTH > 1 || (defined(LCD_REMOTE_DEPTH) && LCD_REMOTE_DEPTH > 1)
        screens[screen].backdrop_show(NULL);
#endif
        screens[screen].scroll_stop();
        skinlist_set_cfg(screen, NULL);
    }
    /* let list initialize viewport in case viewport dimensions is changed. */
    send_event(GUI_EVENT_THEME_CHANGED, NULL);
    FOR_NB_SCREENS(i)
        was_enabled[i] = is_theme_enabled(i);
#ifdef HAVE_TOUCHSCREEN
    sb_bypass_touchregions(!is_theme_enabled(SCREEN_MAIN));
#endif
    after_boot[screen] = true;
}

void viewportmanager_theme_enable(enum screen_type screen, bool enable,
                                 struct viewport *viewport)
{
    int top = ++theme_stack_top[screen];
    if (top >= VPSTACK_DEPTH-1)
        panicf("Stack overflow... viewportmanager");
    theme_stack[screen][top].enabled = enable;
    theme_stack[screen][top].vp = viewport;
    toggle_theme(screen, false);
    /* then be nice and set the viewport up */
    if (viewport)
        viewport_set_defaults(viewport, screen);
}

void viewportmanager_theme_undo(enum screen_type screen, bool force_redraw)
{
    int top = --theme_stack_top[screen];
    if (top < 0)
        panicf("Stack underflow... viewportmanager");

    toggle_theme(screen, force_redraw);
}


static bool is_theme_enabled(enum screen_type screen)
{
    int top = theme_stack_top[screen];
    return theme_stack[screen][top].enabled;
}

int viewport_get_nb_lines(const struct viewport *vp)
{
    return vp->height/font_get(vp->font)->height;
}

static void viewportmanager_redraw(unsigned short id, void* data)
{
    (void)id;
    FOR_NB_SCREENS(i)
    {
        if (is_theme_enabled(i))
            sb_skin_update(i, NULL != data);
    }
}

void viewportmanager_init(void)
{
    FOR_NB_SCREENS(i)
    {
        theme_stack_top[i] = -1; /* the next call fixes this to 0 */
        /* We always want the theme enabled by default... */
        viewportmanager_theme_enable(i, true, NULL);
    }
}

void viewportmanager_theme_changed(const int which)
{
    if (which & THEME_LANGUAGE)
    {
    }
    if (which & (THEME_STATUSBAR|THEME_UI_VIEWPORT))
    {
        FOR_NB_SCREENS(i)
        {
            /* This can probably be done better...
             * disable the theme so it's forced to do a full redraw  */
            viewportmanager_theme_enable(i, false, NULL);
            viewportmanager_theme_undo(i, true);
        }
    }
    send_event(GUI_EVENT_THEME_CHANGED, NULL);
}

#ifdef HAVE_TOUCHSCREEN
/* check if a point (x and y coordinates) are within a viewport */
bool viewport_point_within_vp(const struct viewport *vp,
                               const int x, const int y)
{
    bool is_x = (x >= vp->x && x < (vp->x + vp->width));
    bool is_y = (y >= vp->y && y < (vp->y + vp->height));
    return (is_x && is_y);
}
#endif /* HAVE_TOUCHSCREEN */

static void set_default_align_flags(struct viewport *vp)
{
    vp->flags &= ~VP_FLAG_ALIGNMENT_MASK;
    if (UNLIKELY(lang_is_rtl()))
        vp->flags |= VP_FLAG_ALIGN_RIGHT;
}

#endif /* __PCTOOL__ */

void viewport_set_fullscreen(struct viewport *vp,
                              const enum screen_type screen)
{
    screens[screen].init_viewport(vp);
    vp->x = 0;
    vp->y = 0;
    vp->width = screens[screen].lcdwidth;
    vp->height = screens[screen].lcdheight;
#ifndef __PCTOOL__
    set_default_align_flags(vp);
#endif
    vp->font = screens[screen].getuifont();
    vp->drawmode = DRMODE_SOLID;
#if LCD_DEPTH > 1
#ifdef HAVE_REMOTE_LCD
    /* We only need this test if there is a remote LCD */
    if (screen == SCREEN_MAIN)
#endif
    {
        vp->fg_pattern = FG_FALLBACK;
        vp->bg_pattern = BG_FALLBACK;
    }
#endif

#if defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH > 1
    if (screen == SCREEN_REMOTE)
    {
        vp->fg_pattern = LCD_REMOTE_DEFAULT_FG;
        vp->bg_pattern = LCD_REMOTE_DEFAULT_BG;
    }
#endif
}

void viewport_set_buffer(struct viewport *vp, struct frame_buffer_t *buffer,
                                                const enum screen_type screen)
{
    if (!vp) /* NULL vp grabs current framebuffer */
        vp = *(screens[screen].current_viewport);

    /* NULL sets default buffer */
    if (buffer && buffer->elems == 0)
        vp->buffer = NULL;
    else
        vp->buffer = buffer;
    screens[screen].init_viewport(vp);
}

void viewport_set_defaults(struct viewport *vp,
                            const enum screen_type screen)
{
    vp->buffer = NULL; /* use default frame_buffer */
    vp->flags = VP_DEFAULT_FLAGS;
#if !defined(__PCTOOL__)
    struct viewport *sbs_area = NULL;
    if (!is_theme_enabled(screen))
    {
        viewport_set_fullscreen(vp, screen);
        return;
    }
    sbs_area = sb_skin_get_info_vp(screen);

    if (sbs_area)
        *vp = *sbs_area;
    else
#endif /* !__PCTOOL__ */
        viewport_set_fullscreen(vp, screen);
}