summaryrefslogtreecommitdiff
path: root/src/ui/labelwidget.c
blob: 8cba2d00dc522ee33ff089199ed6ba16c778ccdc (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
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
/* 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 "labelwidget.h"
#include "text.h"
#include "color.h"
#include "paint.h"
#include "app.h"
#include "util.h"
#include "keys.h"

iLocalDef iInt2 padding_(int64_t flags) {
#if defined (iPlatformAppleMobile)
    return init_I2(flags & tight_WidgetFlag ? 4 * gap_UI / 2 : (4 * gap_UI), 3 * gap_UI / 2);
#else
    return init_I2(flags & tight_WidgetFlag ? 3 * gap_UI / 2 : (3 * gap_UI), gap_UI);
#endif
}

struct Impl_LabelWidget {
    iWidget widget;
    iString label;
    int     font;
    int     key;
    int     kmods;
    int     forceFg;
    iString command;
    iBool   alignVisual; /* align according to visible bounds, not typography */
    iClick  click;
};

iDefineObjectConstructionArgs(LabelWidget,
                              (const char *label, const char *cmd),
                              label, cmd)

static iBool checkModifiers_(int have, int req) {
    return keyMods_Sym(req) == keyMods_Sym(have);
}

static void trigger_LabelWidget_(const iLabelWidget *d) {
    const iWidget *w = constAs_Widget(d);
    postCommand_Widget(&d->widget, "%s", cstr_String(&d->command));
    if (flags_Widget(w) & radio_WidgetFlag) {
        iForEach(ObjectList, i, children_Widget(w->parent)) {
            setFlags_Widget(i.object, selected_WidgetFlag, d == i.object);
        }
    }
}

static void updateKey_LabelWidget_(iLabelWidget *d) {
    if (!isEmpty_String(&d->command)) {
        const iBinding *bind = findCommand_Keys(cstr_String(&d->command));
        if (bind) {
            d->key   = bind->key;
            d->kmods = bind->mods;
        }
    }
}

static iBool processEvent_LabelWidget_(iLabelWidget *d, const SDL_Event *ev) {
    iWidget *w = &d->widget;
    if (isCommand_UserEvent(ev, "metrics.changed")) {
        updateSize_LabelWidget(d);
    }
    else if (isCommand_UserEvent(ev, "bindings.changed")) {
        /* Update the key used to trigger this label. */
        updateKey_LabelWidget_(d);
        return iFalse;
    }
    if (!isEmpty_String(&d->command)) {
#if 0 && defined (iPlatformAppleMobile)
        /* Touch allows activating any button on release. */
        switch (ev->type) {
            case SDL_MOUSEBUTTONUP: {
                const iInt2 mouse = init_I2(ev->button.x, ev->button.y);
                if (contains_Widget(w, mouse)) {
                    trigger_LabelWidget_(d);
                    refresh_Widget(w);
                }
                break;
            }
        }
#endif
        switch (processEvent_Click(&d->click, ev)) {
            case started_ClickResult:
                setFlags_Widget(w, pressed_WidgetFlag, iTrue);
                refresh_Widget(w);
                return iTrue;
            case aborted_ClickResult:
                setFlags_Widget(w, pressed_WidgetFlag, iFalse);
                refresh_Widget(w);
                return iTrue;
            case finished_ClickResult:
                setFlags_Widget(w, pressed_WidgetFlag, iFalse);
                trigger_LabelWidget_(d);
                refresh_Widget(w);
                return iTrue;
            case double_ClickResult:
                return iTrue;
            default:
                break;
        }
        switch (ev->type) {
            case SDL_KEYDOWN: {
                const int mods = ev->key.keysym.mod;
                if (d->key && ev->key.keysym.sym == d->key && checkModifiers_(mods, d->kmods)) {
                    trigger_LabelWidget_(d);
                    return iTrue;
                }
                break;
            }
        }
    }
    return processEvent_Widget(&d->widget, ev);
}

static void keyStr_LabelWidget_(const iLabelWidget *d, iString *str) {
    toString_Sym(d->key, d->kmods, str);
}

static void getColors_LabelWidget_(const iLabelWidget *d, int *bg, int *fg, int *frame1, int *frame2) {
    const iWidget *w           = constAs_Widget(d);
    const int64_t  flags       = flags_Widget(w);
    const iBool    isPress     = (flags & pressed_WidgetFlag) != 0;
    const iBool    isSel       = (flags & selected_WidgetFlag) != 0;
    const iBool    isFrameless = (flags & frameless_WidgetFlag) != 0;
    const iBool    isButton    = d->click.button != 0;
    /* Default color state. */
    *bg     = isButton && ~flags & noBackground_WidgetFlag ? uiBackground_ColorId : none_ColorId;
    *fg     = uiText_ColorId;
    *frame1 = isButton ? uiEmboss1_ColorId : d->widget.frameColor;
    *frame2 = isButton ? uiEmboss2_ColorId : *frame1;
    if (flags & disabled_WidgetFlag && isButton) {
        *fg = uiTextDisabled_ColorId;
    }
    if (isSel) {
        *bg = uiBackgroundSelected_ColorId;
        *fg = uiTextSelected_ColorId;
        if (isButton) {
            *frame1 = uiEmbossSelected1_ColorId;
            *frame2 = uiEmbossSelected2_ColorId;
        }
    }
    if (isHover_Widget(w)) {
        if (isFrameless) {
            *bg = uiBackgroundFramelessHover_ColorId;
            *fg = uiTextFramelessHover_ColorId;
        }
        else {
            /* Frames matching color escaped text. */
            if (startsWith_String(&d->label, "\r")) {
                if (isDark_ColorTheme(colorTheme_App())) {
                    *frame1 = cstr_String(&d->label)[1] - asciiBase_ColorEscape;
                    *frame2 = darker_Color(*frame1);
                }
                else {
                    *bg = *frame1 = *frame2 = cstr_String(&d->label)[1] - asciiBase_ColorEscape;
                    *fg = uiBackground_ColorId | permanent_ColorId;
                }
            }
            else if (isSel) {
                *frame1 = uiEmbossSelectedHover1_ColorId;
                *frame2 = uiEmbossSelectedHover2_ColorId;
            }
            else {
                if (isButton) *bg = uiBackgroundHover_ColorId;
                *frame1 = uiEmbossHover1_ColorId;
                *frame2 = uiEmbossHover2_ColorId;
            }
        }
    }
    if (isPress) {
        *bg = uiBackgroundPressed_ColorId | permanent_ColorId;
        if (isButton) {
            *frame1 = uiEmbossPressed1_ColorId;
            *frame2 = uiEmbossPressed2_ColorId;
        }
        *fg = uiTextPressed_ColorId | permanent_ColorId;
    }
    if (d->forceFg >= 0) {
        *fg = d->forceFg;
    }
}

static void draw_LabelWidget_(const iLabelWidget *d) {
    const iWidget *w = constAs_Widget(d);
    draw_Widget(w);
    const iBool   isButton = d->click.button != 0;
    const int64_t flags    = flags_Widget(w);
    const iRect   bounds   = bounds_Widget(w);
    iRect         rect     = bounds;
    if (isButton) {
        shrink_Rect(&rect, divi_I2(gap2_UI, 4));
        adjustEdges_Rect(&rect, gap_UI / 8, 0, -gap_UI / 8, 0);
    }
    iPaint p;
    init_Paint(&p);
    int bg, fg, frame, frame2;
    getColors_LabelWidget_(d, &bg, &fg, &frame, &frame2);
    if (bg >= 0) {
        fillRect_Paint(&p, rect, bg);
    }
    if (~flags & frameless_WidgetFlag) {
        iRect frameRect = adjusted_Rect(rect, zero_I2(), init1_I2(-1));
        if (isButton) {
            iInt2 points[] = {
                bottomLeft_Rect(frameRect), topLeft_Rect(frameRect), topRight_Rect(frameRect),
                bottomRight_Rect(frameRect), bottomLeft_Rect(frameRect)
            };
            drawLines_Paint(&p, points + 2, 3, frame2);
            drawLines_Paint(
                &p, points, !isHover_Widget(w) && flags & noTopFrame_WidgetFlag ? 2 : 3, frame);
        }
    }
    setClip_Paint(&p, rect);
    if (flags & wrapText_WidgetFlag) {
        const iRect inner = innerBounds_Widget(w);
        const int   wrap  = inner.size.x;
        drawWrapRange_Text(d->font, topLeft_Rect(inner), wrap, fg, range_String(&d->label));
    }
    else if (flags & alignLeft_WidgetFlag) {
        draw_Text(d->font, add_I2(bounds.pos, padding_(flags)), fg, cstr_String(&d->label));
        if ((flags & drawKey_WidgetFlag) && d->key) {
            iString str;
            init_String(&str);
            keyStr_LabelWidget_(d, &str);
            drawAlign_Text(uiShortcuts_FontId,
                           add_I2(topRight_Rect(bounds), negX_I2(padding_(flags))),
                           flags & pressed_WidgetFlag ? fg : uiTextShortcut_ColorId,
                           right_Alignment,
                           cstr_String(&str));
            deinit_String(&str);
        }
    }
    else if (flags & alignRight_WidgetFlag) {
        drawAlign_Text(
            d->font,
            add_I2(topRight_Rect(bounds), negX_I2(padding_(flags))),
            fg,
            right_Alignment,
            cstr_String(&d->label));
    }
    else {
        drawCentered_Text(d->font, bounds, d->alignVisual, fg, cstr_String(&d->label));
    }
    unsetClip_Paint(&p);
}

static void sizeChanged_LabelWidget_(iLabelWidget *d) {
    iWidget *w = as_Widget(d);
    if (flags_Widget(w) & wrapText_WidgetFlag) {
        if (flags_Widget(w) & fixedHeight_WidgetFlag) {
            /* Calculate a new height based on the wrapping. */
            w->rect.size.y = advanceWrapRange_Text(
                                 d->font, innerBounds_Widget(w).size.x, range_String(&d->label))
                                 .y;
        }
    }
}

void updateSize_LabelWidget(iLabelWidget *d) {
    iWidget *w = as_Widget(d);
    const int64_t flags = flags_Widget(w);
    iInt2 size = add_I2(measure_Text(d->font, cstr_String(&d->label)), muli_I2(padding_(flags), 2));
    if ((flags & drawKey_WidgetFlag) && d->key) {
        iString str;
        init_String(&str);
        keyStr_LabelWidget_(d, &str);
        size.x += 2 * gap_UI + measure_Text(uiShortcuts_FontId, cstr_String(&str)).x;
        deinit_String(&str);
    }
    /* Wrapped text implies that width must be defined by arrangement. */
    if (!(flags & (fixedWidth_WidgetFlag | wrapText_WidgetFlag))) {
        w->rect.size.x = size.x;
    }
    if (~flags & fixedHeight_WidgetFlag) {
        w->rect.size.y = size.y;
    }
}

void init_LabelWidget(iLabelWidget *d, const char *label, const char *cmd) {
    init_Widget(&d->widget);
    d->font = uiLabel_FontId;
    d->forceFg = none_ColorId;
    initCStr_String(&d->label, label);
    if (cmd) {
        initCStr_String(&d->command, cmd);
    }
    else {
        setFrameColor_Widget(&d->widget, uiFrame_ColorId);
        init_String(&d->command);
    }
    d->key   = 0;
    d->kmods = 0;
    init_Click(&d->click, d, !isEmpty_String(&d->command) ? SDL_BUTTON_LEFT : 0);
    setFlags_Widget(&d->widget, hover_WidgetFlag, d->click.button != 0);
    d->alignVisual = iFalse;
    updateSize_LabelWidget(d);
    updateKey_LabelWidget_(d); /* could be bound to another key */
}

void deinit_LabelWidget(iLabelWidget *d) {
    deinit_String(&d->label);
    deinit_String(&d->command);
}

void setFont_LabelWidget(iLabelWidget *d, int fontId) {
    d->font = fontId;
    updateSize_LabelWidget(d);
}

void setTextColor_LabelWidget(iLabelWidget *d, int color) {
    if (d && d->forceFg != color) {
        d->forceFg = color;
        refresh_Widget(d);
    }
}

void setText_LabelWidget(iLabelWidget *d, const iString *text) {
    updateText_LabelWidget(d, text);
    updateSize_LabelWidget(d);
}

void setAlignVisually_LabelWidget(iLabelWidget *d, iBool alignVisual) {
    d->alignVisual = alignVisual;
}

void updateText_LabelWidget(iLabelWidget *d, const iString *text) {
    set_String(&d->label, text);
    refresh_Widget(&d->widget);
}

void updateTextCStr_LabelWidget(iLabelWidget *d, const char *text) {
    setCStr_String(&d->label, text);
    refresh_Widget(&d->widget);
}

void setTextCStr_LabelWidget(iLabelWidget *d, const char *text) {
    setCStr_String(&d->label, text);
    updateSize_LabelWidget(d);
}

void setCommand_LabelWidget(iLabelWidget *d, const iString *command) {
    set_String(&d->command, command);
}

const iString *text_LabelWidget(const iLabelWidget *d) {
    return &d->label;
}

const iString *command_LabelWidget(const iLabelWidget *d) {
    return &d->command;
}

iLabelWidget *newKeyMods_LabelWidget(const char *label, int key, int kmods, const char *command) {
    iLabelWidget *d = new_LabelWidget(label, command);
    d->key = key;
    d->kmods = kmods;
    updateKey_LabelWidget_(d); /* could be bound to a different key */
    return d;
}

iLabelWidget *newColor_LabelWidget(const char *text, int color) {
    iLabelWidget *d = new_LabelWidget(format_CStr("%s%s", escape_Color(color), text), NULL);
    setFlags_Widget(as_Widget(d), frameless_WidgetFlag, iTrue);
    return d;
}

iBeginDefineSubclass(LabelWidget, Widget)
    .processEvent = (iAny *) processEvent_LabelWidget_,
    .draw         = (iAny *) draw_LabelWidget_,
   .sizeChanged   = (iAny *) sizeChanged_LabelWidget_,
iEndDefineSubclass(LabelWidget)