1 /*
2
3 copyright (c) 2010-2013 uim Project https://github.com/uim/uim
4
5 All rights reserved.
6
7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions
9 are met:
10
11 1. Redistributions of source code must retain the above copyright
12 notice, this list of conditions and the following disclaimer.
13 2. Redistributions in binary form must reproduce the above copyright
14 notice, this list of conditions and the following disclaimer in the
15 documentation and/or other materials provided with the distribution.
16 3. Neither the name of authors nor the names of its contributors
17 may be used to endorse or promote products derived from this software
18 without specific prior written permission.
19
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND
21 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE
24 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 SUCH DAMAGE.
31
32 */
33 #include "candidatetablewindow.h"
34
35 #include <cstdio>
36
37 #include <QtGui/QFontMetrics>
38 #if QT_VERSION < 0x050000
39 # include <QtGui/QLabel>
40 # include <QtGui/QGridLayout>
41 # include <QtGui/QStyle>
42 # include <QtGui/QVBoxLayout>
43 #else
44 # include <QtWidgets/QLabel>
45 # include <QtWidgets/QGridLayout>
46 # include <QtWidgets/QStyle>
47 # include <QtWidgets/QVBoxLayout>
48 #endif
49
50 #include <uim/uim-scm.h>
51
52 static const int TABLE_NR_CELLS = TABLE_NR_COLUMNS * TABLE_NR_ROWS;
53
54 static const int BLOCK_SPACING = 20;
55 static const int HOMEPOSITION_SPACING = 2;
56
57 // labelchar_table consists of four blocks
58 // blockLR blockA
59 // blockLRS blockAS
60 static const int L_WIDTH = 5;
61 static const int R_WIDTH = 5;
62 static const int A_WIDTH = 3;
63
64 static const int A_HEIGHT = 4;
65 static const int AS_HEIGHT = 4;
66
67 // 106 keyboard
68 static char DEFAULT_TABLE[TABLE_NR_CELLS] = {
69 '1','2','3','4','5', '6','7','8','9','0', '-','^','\\',
70 'q','w','e','r','t', 'y','u','i','o','p', '@','[','\0',
71 'a','s','d','f','g', 'h','j','k','l',';', ':',']','\0',
72 'z','x','c','v','b', 'n','m',',','.','/', '\0','\0',' ',
73 '!','"','#','$','%', '&','\'','(',')','\0', '=','~','|',
74 'Q','W','E','R','T', 'Y','U','I','O','P', '`','{','\0',
75 'A','S','D','F','G', 'H','J','K','L','+', '*','}','\0',
76 'Z','X','C','V','B', 'N','M','<','>','?', '_','\0','\0',
77 };
78
CandidateTableWindow(QWidget * parent)79 CandidateTableWindow::CandidateTableWindow(QWidget *parent)
80 : AbstractCandidateWindow(parent)
81 {
82 initTable();
83
84 lLayout = createLayout(A_HEIGHT, L_WIDTH, 0, 0);
85 rLayout = createLayout(A_HEIGHT, R_WIDTH, 0, L_WIDTH);
86 aLayout = createLayout(A_HEIGHT, A_WIDTH, 0, L_WIDTH + R_WIDTH);
87 lsLayout = createLayout(AS_HEIGHT, L_WIDTH, A_HEIGHT, 0);
88 rsLayout = createLayout(AS_HEIGHT, R_WIDTH, A_HEIGHT, L_WIDTH);
89 asLayout = createLayout(AS_HEIGHT, A_WIDTH, A_HEIGHT, L_WIDTH + R_WIDTH);
90
91 QGridLayout *buttonLayout = new QGridLayout;
92 buttonLayout->setSpacing(BLOCK_SPACING - 2 * HOMEPOSITION_SPACING);
93 buttonLayout->setMargin(0);
94 buttonLayout->addLayout(lLayout, 0, 0);
95 buttonLayout->addLayout(rLayout, 0, 1);
96 buttonLayout->addLayout(aLayout, 0, 2);
97 buttonLayout->addLayout(lsLayout, 1, 0);
98 buttonLayout->addLayout(rsLayout, 1, 1);
99 buttonLayout->addLayout(asLayout, 1, 2);
100
101 QVBoxLayout *layout = new QVBoxLayout;
102 layout->setMargin(0);
103 layout->setSpacing(0);
104 layout->addLayout(buttonLayout);
105 layout->addWidget(numLabel);
106
107 setLayout(layout);
108 }
109
~CandidateTableWindow()110 CandidateTableWindow::~CandidateTableWindow()
111 {
112 if (table != DEFAULT_TABLE)
113 free(table);
114 }
115
sizeHint() const116 QSize CandidateTableWindow::sizeHint() const
117 {
118 QRect lRect = lLayout->geometry();
119
120 // height
121 // numLabel + lLayout
122 int height = numLabel->height() + lRect.height();
123 if (lsLayout->isEnabled()) {
124 // lsLayout
125 height += lsLayout->geometry().height()
126 + BLOCK_SPACING - 2 * HOMEPOSITION_SPACING;
127 }
128
129 // width
130 // lLayout + rLayout
131 int width = lRect.width() + rLayout->geometry().width()
132 + BLOCK_SPACING - 2 * HOMEPOSITION_SPACING;
133 if (aLayout->isEnabled()) {
134 // aLayout
135 width += aLayout->geometry().width()
136 + BLOCK_SPACING - 2 * HOMEPOSITION_SPACING;
137 }
138
139 return QSize(width, height);
140 }
141
slotCandidateClicked(int index)142 void CandidateTableWindow::slotCandidateClicked(int index)
143 {
144 fprintf(stdout, "set_candidate_index\f%d\f\f", index);
145 fflush(stdout);
146 fprintf(stdout, "update_label\f\f");
147 fflush(stdout);
148 }
149
initTableInternal()150 static char *initTableInternal()
151 {
152 uim_lisp list = uim_scm_symbol_value("uim-candwin-prog-layout");
153 if (!list || !uim_scm_listp(list))
154 return DEFAULT_TABLE;
155 size_t len = 0;
156 void **array = uim_scm_list2array(list, &len,
157 reinterpret_cast<void *(*)(uim_lisp)>(uim_scm_c_str));
158 if (!array || len <= 0) {
159 free(array);
160 return DEFAULT_TABLE;
161 }
162 char *table = static_cast<char *>(malloc(TABLE_NR_CELLS * sizeof(char)));
163 if (!table) {
164 free(array);
165 return DEFAULT_TABLE;
166 }
167 for (int i = 0; i < TABLE_NR_CELLS; i++) {
168 if (i >= static_cast<int>(len)) {
169 table[i] = '\0';
170 continue;
171 }
172 char *str = static_cast<char *>(array[i]);
173 // XXX: only use first char
174 table[i] = str[0];
175 }
176 free(array);
177 return table;
178 }
179
initTable()180 void CandidateTableWindow::initTable()
181 {
182 uim_gc_gate_func_ptr func_body
183 = reinterpret_cast<uim_gc_gate_func_ptr>(initTableInternal);
184 void *ret = uim_scm_call_with_gc_ready_stack(func_body, 0);
185 table = static_cast<char *>(ret);
186 }
187
createLayout(int row,int column,int rowOffset,int columnOffset)188 QGridLayout *CandidateTableWindow::createLayout(int row, int column,
189 int rowOffset, int columnOffset)
190 {
191 QGridLayout *layout = new QGridLayout;
192 layout->setSpacing(HOMEPOSITION_SPACING);
193 layout->setMargin(0);
194 for (int i = 0; i < row; i++) {
195 for (int j = 0; j < column; j++) {
196 KeyButton *button = new KeyButton;
197 connect(button, SIGNAL(candidateClicked(int)),
198 this, SLOT(slotCandidateClicked(int)));
199 int r = i + rowOffset;
200 int c = j + columnOffset;
201 buttonArray[r][c] = button;
202 if (table[r * TABLE_NR_COLUMNS + c] == '\0') {
203 // Hide this button because some styles such as Oxygen
204 // ignore the flat property.
205 button->hide();
206 button->setFlat(true);
207 }
208 layout->addWidget(button, i, j);
209 }
210 }
211 layout->addItem(new QSpacerItem(0, 0,
212 QSizePolicy::Expanding, QSizePolicy::Expanding), row, column);
213 return layout;
214 }
215
isEmptyBlock(QGridLayout * layout)216 static bool isEmptyBlock(QGridLayout *layout)
217 {
218 for (int i = 0; i < layout->count(); i++) {
219 QWidget *widget = layout->itemAt(i)->widget();
220 if (widget && widget->isEnabled())
221 return false;
222 }
223 return true;
224 }
225
setBlockVisible(QLayout * layout,bool visible)226 void CandidateTableWindow::setBlockVisible(QLayout *layout, bool visible)
227 {
228 if (visible == layout->isEnabled())
229 return;
230 layout->setEnabled(visible);
231 for (int i = 0; i < layout->count(); i++) {
232 QPushButton *widget
233 = qobject_cast<QPushButton*>(layout->itemAt(i)->widget());
234 // Flat buttons shouldn't be shown.
235 if (widget && !(visible && widget->isFlat()))
236 widget->setVisible(visible);
237 }
238 }
239
updateView(int ncandidates,const QList<CandData> & stores)240 void CandidateTableWindow::updateView(int ncandidates,
241 const QList<CandData> &stores)
242 {
243 for (int i = 0; i < TABLE_NR_ROWS; i++) {
244 for (int j = 0; j < TABLE_NR_COLUMNS; j++) {
245 KeyButton *button = buttonArray[i][j];
246 button->setIndex(-1);
247 button->setEnabled(false);
248 button->setText("");
249 }
250 }
251 int index = 0;
252 int delta = 0;
253 for (int i = 0; i < TABLE_NR_ROWS; i++) {
254 for (int j = 0; j < TABLE_NR_COLUMNS; j++) {
255 if (table[index] == '\0') {
256 delta++;
257 index++;
258 continue;
259 }
260 if (index - delta >= ncandidates)
261 continue;
262 int candidateIndex = index - delta;
263 CandData cand = stores[candidateIndex];
264 QString candString = cand.str;
265 if (!candString.isEmpty()) {
266 int row = i;
267 int column = j;
268 QString headString = cand.headingLabel;
269 getButtonPosition(row, column, headString);
270 KeyButton *b = buttonArray[row][column];
271 // '&' shouldn't be used as the shortcut key
272 b->setText(candString.replace('&', "&&"));
273 b->setIndex(candidateIndex);
274 b->setEnabled(true);
275 }
276 index++;
277 }
278 }
279 }
280
updateSize()281 void CandidateTableWindow::updateSize()
282 {
283 // hide empty blocks.
284 // pattern0 (full table)
285 // blockLR blockA
286 // blockLRS blockAS (for shift key)
287 // pattern1 (minimal blocks)
288 // blockLR
289 // pattern2 (without shift blocks)
290 // blockLR blockA
291 // pattern3 (without symbol blocks)
292 // blockLR
293 // blockLRS
294 bool hasBlockA = !isEmptyBlock(aLayout);
295 bool hasBlockAs = !isEmptyBlock(asLayout);
296 bool hasBlockLrs = !(isEmptyBlock(lsLayout) && isEmptyBlock(rsLayout));
297
298 setBlockVisible(aLayout, hasBlockA || hasBlockAs);
299 setBlockVisible(asLayout, hasBlockAs || (hasBlockA && hasBlockLrs));
300 setBlockVisible(lsLayout, hasBlockLrs || hasBlockAs);
301 setBlockVisible(rsLayout, hasBlockLrs || hasBlockAs);
302
303 setMaximumSize(sizeHint());
304 setMinimumSize(QSize(0, 0));
305 }
306
setIndex(int totalindex,int displayLimit,int candidateIndex)307 void CandidateTableWindow::setIndex(int totalindex, int displayLimit,
308 int candidateIndex)
309 {
310 Q_UNUSED(totalindex)
311 Q_UNUSED(displayLimit)
312 Q_UNUSED(candidateIndex)
313 fprintf(stdout, "update_label\f\f");
314 fflush(stdout);
315 }
316
getButtonPosition(int & row,int & column,const QString & headString)317 void CandidateTableWindow::getButtonPosition(int &row, int &column,
318 const QString &headString)
319 {
320 char *ch = table;
321 for (int i = 0; i < TABLE_NR_ROWS; i++) {
322 for (int j = 0; j < TABLE_NR_COLUMNS; j++) {
323 if (*ch == '\0') {
324 ch++;
325 continue;
326 }
327 const char str[] = {*ch, '\0'};
328 if (headString == QLatin1String(str)) {
329 row = i;
330 column = j;
331 return;
332 }
333 ch++;
334 }
335 }
336 }
337
KeyButton()338 KeyButton::KeyButton() : m_index(-1)
339 {
340 connect(this, SIGNAL(clicked()), this, SLOT(slotClicked()));
341 }
342
sizeHint() const343 QSize KeyButton::sizeHint() const
344 {
345 QSize size = QPushButton::sizeHint();
346 int margin = style()->pixelMetric(QStyle::PM_ButtonMargin);
347 int width = qMax(size.height(),
348 QFontMetrics(QFont()).boundingRect(text()).width() + margin * 2);
349 return QSize(width, size.height());
350 }
351
setIndex(int index)352 void KeyButton::setIndex(int index)
353 {
354 m_index = index;
355 }
356
index() const357 int KeyButton::index() const
358 {
359 return m_index;
360 }
361
slotClicked()362 void KeyButton::slotClicked()
363 {
364 if (m_index >= 0)
365 emit candidateClicked(m_index);
366 }
367