summaryrefslogtreecommitdiff
path: root/src/ui/keys.c
blob: 0f4a19f7d27cee3e7ec8767a15a307259f72d21b (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
/* Copyright 2020 Jaakko Keränen <jaakko.keranen@iki.fi>

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */

#include "keys.h"
#include "util.h"
#include "app.h"

#include <the_Foundation/file.h>
#include <the_Foundation/path.h>
#include <the_Foundation/ptrset.h>

iDeclareType(Keys)

static int cmpPtr_Binding_(const void *a, const void *b) {
    const iBinding *d = *(const void **) a, *other = *(const void **) b;
    const int cmp = iCmp(d->key, other->key);
    if (cmp == 0) {
        return iCmp(d->mods, other->mods);
    }
    return cmp;
}

/*----------------------------------------------------------------------------------------------*/

struct Impl_Keys {
    iArray  bindings;
    iPtrSet lookup; /* quick key/mods lookup */
};

static iKeys keys_;

static void clear_Keys_(iKeys *d) {
    iForEach(Array, i, &d->bindings) {
        iBinding *bind = i.value;
        deinit_String(&bind->command);
        deinit_String(&bind->label);
    }
}

enum iBindFlag {
    argRepeat_BindFlag  = iBit(1),
    argRelease_BindFlag = iBit(2),
};

/* TODO: This indirection could be used for localization, although all UI strings
   would need to be similarly handled. */
static const struct { int id; iMenuItem bind; int flags; } defaultBindings_[] = {
    { 1,  { "Jump to top",               SDLK_HOME, 0,                  "scroll.top"         }, 0 },
    { 2,  { "Jump to bottom",            SDLK_END, 0,                   "scroll.bottom"      }, 0 },
    { 10, { "Scroll up",                 SDLK_UP, 0,                    "scroll.step arg:-1" }, argRepeat_BindFlag },
    { 11, { "Scroll down",               SDLK_DOWN, 0,                  "scroll.step arg:1"  }, argRepeat_BindFlag },
    { 20, { "Scroll up half a page",     SDLK_PAGEUP, 0,                "scroll.page arg:-1" }, argRepeat_BindFlag },
    { 21, { "Scroll down half a page",   SDLK_PAGEDOWN, 0,              "scroll.page arg:1"  }, argRepeat_BindFlag },
    { 30, { "Go back",                   navigateBack_KeyShortcut,      "navigate.back"      }, 0 },
    { 31, { "Go forward",                navigateForward_KeyShortcut,   "navigate.forward"   }, 0 },
    { 32, { "Go to parent directory",    navigateParent_KeyShortcut,    "navigate.parent"    }, 0 },
    { 33, { "Go to site root",           navigateRoot_KeyShortcut,      "navigate.root"      }, 0 },
    { 35, { "Reload page",               reload_KeyShortcut,            "document.reload"    }, 0 },
    { 41, { "Open link via modifier key", SDLK_LALT, 0,                 "document.linkkeys arg:0" }, argRelease_BindFlag },
    { 42, { "Open link via home row keys", 'f', 0,                      "document.linkkeys arg:1" }, 0 },
    { 45, { "Open link in new tab via home row keys", 'f', KMOD_SHIFT,  "document.linkkeys arg:1 newtab:1" }, 0 },
    { 46, { "Hover on link via home row keys", 'h', 0,                  "document.linkkeys arg:1 hover:1" }, 0 },
    { 47, { "Next set of home row key links", '.', 0,                   "document.linkkeys more:1" }, 0 },
    { 50, { "Add bookmark",              'd', KMOD_PRIMARY,             "bookmark.add"       }, 0 },
    { 70, { "Zoom in",                   SDLK_EQUALS, KMOD_PRIMARY,     "zoom.delta arg:10"  }, 0 },
    { 71, { "Zoom out",                  SDLK_MINUS, KMOD_PRIMARY,      "zoom.delta arg:-10" }, 0 },
    { 72, { "Reset zoom",                SDLK_0, KMOD_PRIMARY,          "zoom.set arg:100"   }, 0 },
#if !defined (iPlatformApple) /* Ctrl-Cmd-F on macOS */
    { 73, { "Toggle fullscreen mode",    SDLK_F11, 0,                   "window.fullscreen"  }, 0 },
#endif
    { 76, { "New tab",                   newTab_KeyShortcut,            "tabs.new"           }, 0 },
    { 77, { "Close tab",                 closeTab_KeyShortcut,          "tabs.close"         }, 0 },
    { 80, { "Previous tab",              prevTab_KeyShortcut,           "tabs.prev"          }, 0 },
    { 81, { "Next tab",                  nextTab_KeyShortcut,           "tabs.next"          }, 0 },
    { 100,{ "Toggle show URL on hover",  '/', KMOD_PRIMARY,             "prefs.hoverlink.toggle" }, 0 },
    /* The following cannot currently be changed (built-in duplicates). */
    { 1000, { NULL, SDLK_SPACE, KMOD_SHIFT, "scroll.page arg:-1" }, argRepeat_BindFlag },
    { 1001, { NULL, SDLK_SPACE, 0, "scroll.page arg:1" }, argRepeat_BindFlag },
#if defined (iPlatformApple)
    { 1002, { NULL, SDLK_LEFTBRACKET, KMOD_PRIMARY, "navigate.back" }, 0 },
    { 1003, { NULL, SDLK_RIGHTBRACKET, KMOD_PRIMARY, "navigate.forward" }, 0 },
#endif
    { 1004, { NULL, SDLK_F5, 0, "document.reload" }, 0 },
};

static iBinding *findId_Keys_(iKeys *d, int id) {
    iForEach(Array, i, &d->bindings) {
        iBinding *bind = i.value;
        if (bind->id == id) {
            return bind;
        }
    }
    return NULL;
}

static void setFlags_Keys_(int id, int bindFlags) {
    iBinding *bind = findId_Keys_(&keys_, id);
    if (bind) {
        bind->flags = bindFlags;
    }
}

static void bindDefaults_(void) {
    iForIndices(i, defaultBindings_) {
        const int       id   = defaultBindings_[i].id;
        const iMenuItem bind = defaultBindings_[i].bind;
        bind_Keys(id, bind.command, bind.key, bind.kmods);
        if (bind.label) {
            setLabel_Keys(id, bind.label);
        }
        setFlags_Keys_(id, defaultBindings_[i].flags);
    }
}

static iBinding *find_Keys_(iKeys *d, int key, int mods) {
    size_t pos;
    /* Do not differentiate between left and right modifier keys. */
    key = normalizedMod_Sym(key);
    if (isMod_Sym(key)) {
        mods = 0;
    }
    const iBinding elem = { .key = key, .mods = mods };
    if (locate_PtrSet(&d->lookup, &elem, &pos)) {
        return at_PtrSet(&d->lookup, pos);
    }
    return NULL;
}

static iBinding *findCommand_Keys_(iKeys *d, const char *command) {
    /* Note: O(n) */
    iForEach(Array, i, &d->bindings) {
        iBinding *bind = i.value;
        if (!cmp_String(&bind->command, command)) {
            return bind;
        }
    }
    return NULL;
}

static void updateLookup_Keys_(iKeys *d) {
    clear_PtrSet(&d->lookup);
    iConstForEach(Array, i, &d->bindings) {
        insert_PtrSet(&d->lookup, i.value);
    }
}

void setKey_Binding(int id, int key, int mods) {
    iBinding *bind = findId_Keys_(&keys_, id);
    if (bind) {
        bind->key  = normalizedMod_Sym(key);
        bind->mods = isMod_Sym(key) ? 0 : mods;
        updateLookup_Keys_(&keys_);
    }
}

void reset_Binding(int id) {
    iBinding *bind = findId_Keys_(&keys_, id);
    if (bind) {
        iForIndices(i, defaultBindings_) {
            if (defaultBindings_[i].id == id) {
                bind->key  = defaultBindings_[i].bind.key;
                bind->mods = defaultBindings_[i].bind.kmods;
                updateLookup_Keys_(&keys_);
                break;
            }
        }
    }
}

/*----------------------------------------------------------------------------------------------*/

static const char *filename_Keys_ = "bindings.txt";

void init_Keys(void) {
    iKeys *d = &keys_;
    init_Array(&d->bindings, sizeof(iBinding));
    initCmp_PtrSet(&d->lookup, cmpPtr_Binding_);
    bindDefaults_();
    updateLookup_Keys_(d);
}

void deinit_Keys(void) {
    iKeys *d = &keys_;
    clear_Keys_(d);
    deinit_PtrSet(&d->lookup);
    deinit_Array(&d->bindings);
}

void load_Keys(const char *saveDir) {
    iKeys *d = &keys_;
    iFile *f = iClob(newCStr_File(concatPath_CStr(saveDir, filename_Keys_)));
    if (open_File(f, readOnly_FileMode | text_FileMode)) {
        iBlock * src  = collect_Block(readAll_File(f));
        iRangecc line = iNullRange;
        while (nextSplit_Rangecc(range_Block(src), "\n", &line)) {
            int id, key;
            char modBits[5];
            iZap(modBits);
            sscanf(line.start, "%d %x %4s", &id, &key, modBits);
            iBinding *bind = findId_Keys_(d, id);
            if (bind) {
                bind->key = key;
                bind->mods = 0;
                const char *m = modBits;
                for (int i = 0; i < 4 && *m; i++, m++) {
                    if (*m == 's') bind->mods |= KMOD_SHIFT;
                    if (*m == 'a') bind->mods |= KMOD_ALT;
                    if (*m == 'c') bind->mods |= KMOD_CTRL;
                    if (*m == 'g') bind->mods |= KMOD_GUI;
                }
            }
        }
    }
    updateLookup_Keys_(d);
}

void save_Keys(const char *saveDir) {
    iKeys *d = &keys_;
    iFile *f = newCStr_File(concatPath_CStr(saveDir, filename_Keys_));
    if (open_File(f, writeOnly_FileMode | text_FileMode)) {
        iString *line = collectNew_String();
        iConstForEach(Array, i, &d->bindings) {
            const iBinding *bind = i.value;
            format_String(line, "%d %x ", bind->id, bind->key);
            if (bind->mods == 0) {
                appendCStr_String(line, "0");
            }
            else {
                if (bind->mods & KMOD_SHIFT) appendChar_String(line, 's');
                if (bind->mods & KMOD_ALT) appendChar_String(line, 'a');
                if (bind->mods & KMOD_CTRL) appendChar_String(line, 'c');
                if (bind->mods & KMOD_GUI) appendChar_String(line, 'g');
            }
            appendChar_String(line, '\n');
            write_File(f, &line->chars);
        }
        iRelease(f);
    }
}

void bind_Keys(int id, const char *command, int key, int mods) {
    iKeys *d = &keys_;
    iBinding *bind = findId_Keys_(d, id);
    if (!bind) {
        iBinding elem = { .id = id, .key = key, .mods = mods };
        initCStr_String(&elem.command, command);
        init_String(&elem.label);
        pushBack_Array(&d->bindings, &elem);
    }
    else {
        setCStr_String(&bind->command, command);
        bind->key  = key;
        bind->mods = mods;
    }
}

void setLabel_Keys(int id, const char *label) {
    iBinding *bind = findId_Keys_(&keys_, id);
    if (bind) {
        setCStr_String(&bind->label, label);
    }
}

iBool processEvent_Keys(const SDL_Event *ev) {
    iKeys *d = &keys_;
    if (ev->type == SDL_KEYDOWN || ev->type == SDL_KEYUP) {
        const iBinding *bind = find_Keys_(d, ev->key.keysym.sym, keyMods_Sym(ev->key.keysym.mod));
        if (bind) {
            if (ev->type == SDL_KEYUP) {
                if (bind->flags & argRelease_BindFlag) {
                    postCommandf_App("%s release:1", cstr_String(&bind->command));
                    return iTrue;
                }
                return iFalse;
            }
            if (ev->key.repeat && (bind->flags & argRepeat_BindFlag)) {
                postCommandf_App("%s repeat:1", cstr_String(&bind->command));
            }
            else {
                postCommandString_App(&bind->command);
            }
            return iTrue;
        }
    }
    return iFalse;
}

const iBinding *findCommand_Keys(const char *command) {
    return findCommand_Keys_(&keys_, command);
}

const iPtrArray *list_Keys(void) {
    iKeys *d = &keys_;
    iPtrArray *list = collectNew_PtrArray();
    iConstForEach(Array, i, &d->bindings) {
        pushBack_PtrArray(list, i.value);
    }
    return list;
}