aboutsummaryrefslogtreecommitdiff
path: root/qtmips_gui/statictable.cpp
blob: 54b475fef3283eab0d293e561a7947d9abb63aea (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
// SPDX-License-Identifier: GPL-2.0+
/*******************************************************************************
 * QtMips - MIPS 32-bit Architecture Subset Simulator
 *
 * Implemented to support following courses:
 *
 *   B35APO - Computer Architectures
 *   https://cw.fel.cvut.cz/wiki/courses/b35apo
 *
 *   B4M35PAP - Advanced Computer Architectures
 *   https://cw.fel.cvut.cz/wiki/courses/b4m35pap/start
 *
 * Copyright (c) 2017-2019 Karel Koci<cynerd@email.cz>
 * Copyright (c) 2019      Pavel Pisa <pisa@cmp.felk.cvut.cz>
 *
 * Faculty of Electrical Engineering (http://www.fel.cvut.cz)
 * Czech Technical University        (http://www.cvut.cz/)
 *
 * 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 program 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 *
 ******************************************************************************/

#include "statictable.h"
#include <QPainter>
#include <qtmipsexception.h>

StaticTableLayout::StaticTableLayout(QWidget *parent, int margin, int horizontal_big_spacing, int horizontal_small_spacing, int vertical_spacing) : QLayout(parent) {
    setContentsMargins(margin, margin, margin, margin);
    bhspace = horizontal_big_spacing;
    shspace = horizontal_small_spacing;
    vspace = vertical_spacing;
    setSizeConstraint(QLayout::SetMinAndMaxSize);

    cch_do_layout.size = QSize(0, 0);
    cch_do_layout.count = 0;
    cch_heightForWidth.w = 0;
    cch_heightForWidth.count = 0;
    cch_heightForWidth.width = 0;
    cch_minSize.count = 0;
    cch_minSize.size = QSize(0, 0);
}

StaticTableLayout::~StaticTableLayout() {
    for (int i = 0; i < items.size(); i++) {
        for (int y = 0; y < items[i].size(); y++)
            delete items[i][y];
    }
}

Qt::Orientations StaticTableLayout::expandingDirections() const {
    return Qt::Horizontal;
}

bool StaticTableLayout::hasHeightForWidth() const {
    return true;
}

int StaticTableLayout::heightForWidth(int w) const {
    if (cch_heightForWidth.w != w || cch_heightForWidth.count != items.count())
        cch_heightForWidth.width = layout_height(w);
    cch_heightForWidth.w = w;
    cch_heightForWidth.count = items.count();
    return cch_heightForWidth.width;
}

QSize StaticTableLayout::minimumSize() const {
    if (cch_minSize.count == items.size())
        return cch_minSize.size;
    cch_minSize.count = items.size();

    cch_minSize.size = QSize();
    for (int i = 0; i < items.size(); i++) {
        QSize ss;
        for (int y = 0; y < items[i].size(); y++) {
            ss = cch_minSize.size.expandedTo(items[i][y]->minimumSize() + QSize(shspace, 0));
        }
        cch_minSize.size = cch_minSize.size.expandedTo(ss - QSize(shspace, 0));
    }
    cch_minSize.size += QSize(2*margin(), 2*margin());
    return cch_minSize.size;
}

void StaticTableLayout::setGeometry(const QRect &rect) {
    QLayout::setGeometry(rect);
    do_layout(rect);
}

QSize StaticTableLayout::sizeHint() const {
    return minimumSize();
}

void StaticTableLayout::addItem(QLayoutItem *item __attribute__((unused))) {
    // Just implement it but it does nothing
}

QLayoutItem *StaticTableLayout::itemAt(int index __attribute__((unused))) const {
    return nullptr; // This is just dummy implementation to satisfy reimplementation
}

QLayoutItem *StaticTableLayout::takeAt(int index __attribute__((unused))) {
    return nullptr; // This is just dummy implementation to satisfy reimplementation
}

int StaticTableLayout::count() const {
    return items.size();
}

void StaticTableLayout::addRow(QList<QWidget*> w) {
    items.append(list2vec(w));
}

void StaticTableLayout::insertRow(QList<QWidget*> w, int i) {
    items.insert(i, list2vec(w));
}

void StaticTableLayout::removeRow(int i) {
    for (int y = 0; y < items[i].size(); y++) {
        delete items[i][y]->widget();
        delete items[i][y];
    }
    items.remove(i);
}

void StaticTableLayout::clearRows() {
    for (int i = 0; i < items.size(); i++)
        for (int y = 0; y < items[i].size(); y++) {
            delete items[i][y]->widget();
            delete items[i][y];
        }
    items.clear();
}

void StaticTableLayout::itemRect(QRect &rect, QVector<int> &separators, int i) {
    separators.clear();

    int row = i / columns();
    int col = i % columns();

    int left, top, right, bottom;
    getContentsMargins(&left, &top, &right, &bottom);

    int x = left;
    for (int s = 0; s < col; s++) {
        for (int t = 0; t < row_widths[s].size(); t++)
            x += row_widths[s][t] + shspace;
        x += bhspace - shspace;
    }
    if (col > 0) // otherwise we are on left edge and there was no previous column so no big space
        x -= bhspace/2;
    int y = top + (row * (row_height + vspace));

    int width = 0;
    for (int t = 0; t < row_widths[col].size(); t++) {
        width += row_widths[col][t] + shspace;
        separators.append(width - shspace/2);
    }
    if (col <= 0)
        width -= bhspace/2;

    rect = QRect(x, y - vspace/2, width - shspace + bhspace, row_height + vspace);
    separators.removeLast(); // drop last separator as that one we don't want to see
}

int StaticTableLayout::columns() {
    return row_widths.size();
}

int StaticTableLayout::real_row_height() {
    return row_height + vspace;
}

int StaticTableLayout::layout_count_approx(const QRect &rect) const {
    if (items.size() <= 0 || rect.width() < rect.height())
        return 1;
    // Note: for some reason (probably optimalisation) when qlabel is not visible it reports 0 size. So we have to found at least one that is visible
    // !items[vis][0]->widget()->isVisible()
    int vis = 0;
    while (items[vis].size() <= 0 || items[vis][0]->widget()->sizeHint().width() == 0) {
        vis++;
        if (vis >= items.size())
            return 1; // If none is visible then just say that it has to be single column
    }

    int w = 0;
    for (int i = 0; i < items[vis].size(); i++)
        w += items[vis][i]->sizeHint().width() + shspace;
    w -= shspace; // subtract latest spacing
    int width = rect.right() / w; // Note: this always rounds down so this always founds maximal possible count
    return width <= 0 ? 1 : width; // We have to fit at least one column
}

int StaticTableLayout::layout_size(int &row_h, QList<QList<int>> &row_w, int count) const {
    row_h = 0;
    row_w.clear();
    int col = 0;
    for (int i = 0; i < items.size(); i++) {
        if (row_w.size() <= col)
            row_w.append(QList<int>());
        for (int y = 0; y < items[i].size(); y++) {
            QSize s = items[i][y]->sizeHint();
            row_h = qMax(row_h, s.height());
            if (row_w[col].size() <= y)
                row_w[col].append(0);
            row_w[col][y] = qMax(row_w[col][y], s.width());
        }
        if (++col >= count)
            col = 0;
    }
    SANITY_ASSERT(row_w.size() <= count, "We should end up with maximum of count columns");

    int w = 0;
    for (int i = 0; i < row_w.size(); i++) {
        for (int y = 0; y < row_w[i].size(); y++)
            w += row_w[i][y] + shspace;
        w += bhspace - shspace; // subtract latest small spacing and add big spacing
    }
    w -= bhspace; // subtract latest big spacing
    return w;
}

void StaticTableLayout::layout_parms(QRect &rect, int &row_h, QList<QList<int>> &row_w, int &count) const {
    int left, top, right, bottom;
    getContentsMargins(&left, &top, &right, &bottom);
    rect = rect.adjusted(left, top, -right, -bottom);

    // Firt let's do orientation count only on first line
    count = layout_count_approx(rect);
    while (layout_size(row_h, row_w, count) > rect.right() && count > 1) {
        // Not using orientation count go down if we can't fit (if we can then just be happy with what we have)
        count--;
    }
}

void StaticTableLayout::do_layout(const QRect &rect) {
    if (cch_do_layout.size == rect.size() && cch_do_layout.count == items.size())
        // No effective change so don't do layout
        return;
    cch_do_layout.size = rect.size();
    cch_do_layout.count = items.size();

    int row_h;
    QList<QList<int>> row_w;
    int count;

    QRect reff(rect);
    layout_parms(reff, row_h, row_w, count);

    int col = 0;
    int x = reff.x(), y = reff.y();
    for (int i = 0; i < items.size(); i++) {
        for (int ii = 0; ii < items[i].size(); ii++) {
            items[i][ii]->setGeometry(QRect(x, y, row_w[col][ii], row_h));
            x += row_w[col][ii] + shspace;
        }
        x += bhspace - shspace;
        if (++col >= count) {
            col = 0;
            x = reff.x();
            y += row_h + vspace;
        }
    }
    row_height = row_h;
    row_widths = row_w;
}

int StaticTableLayout::layout_height(int width) const {
    QRect reff(0, 0, width, 0);
    int row_h;
    QList<QList<int>> row_w;
    int count;
    layout_parms(reff, row_h, row_w, count);

    return (row_h + vspace) * ((items.size() + count - 1) / count);
}

QVector<QLayoutItem*> StaticTableLayout::list2vec(QList<QWidget*> w) {
    QVector<QLayoutItem*> v;
    for (int i = 0; i < w.size(); i++) {
        addChildWidget(w[i]);
        v.append(new QWidgetItem(w[i]));
    }
    return v;
}

StaticTable::StaticTable(QWidget *parent) : QWidget(parent), layout(this) {
    setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Fixed);
}

int StaticTable::count() {
    return layout.count();
}

void StaticTable::addRow(QList<QWidget*> w) {
    layout.addRow(w);
}

void StaticTable::insertRow(QList<QWidget*> w, int i) {
    layout.insertRow(w, i);
}

void StaticTable::removeRow(int i) {
    layout.removeRow(i);
}

void StaticTable::clearRows() {
    layout.clearRows();
}

int StaticTable::columns() {
    return qMax(layout.columns(), 1);
}

int StaticTable::row_size() {
    return layout.real_row_height();
}

void StaticTable::paintEvent(QPaintEvent*) {
    if (layout.columns() <= 0) // Don't paint unless we have at least one column
        return;

    QPainter p(this);
    p.setPen(QPen(QColor(200, 200, 200)));

    QRect rect;
    QVector<int> separators;
    for (int i = 0; i < layout.count(); i++) {
        int row = i / layout.columns();
        int col = i % layout.columns();

        if ((col % 2) == (row % 2))
            p.setBrush(QBrush(QColor(255, 255, 255)));
        else
            p.setBrush(QBrush(QColor(235, 235, 235)));

        layout.itemRect(rect, separators, i);

        int x = rect.left(); // just to store x
        if (col <= 0) // this is left most row
            rect.setLeft(-2);
        if (col >= (layout.columns() - 1))
            rect.setRight(width());
        if (row <= 0)
            rect.setTop(-2);;

        p.drawRect(rect);

        for (int s = 0; s < separators.size(); s++) {
            int sep_x = x + separators[s];
            p.drawLine(sep_x, rect.top(), sep_x, rect.bottom());
        }
    }

}