stylehelper.cpp 17.5 KB
Newer Older
1
/**************************************************************************
con's avatar
con committed
2 3 4
**
** This file is part of Qt Creator
**
hjk's avatar
hjk committed
5
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
con's avatar
con committed
6
**
7
** Contact: Nokia Corporation (qt-info@nokia.com)
con's avatar
con committed
8
**
9
** Commercial Usage
10
**
11 12 13 14
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
15
**
16
** GNU Lesser General Public License Usage
17
**
18 19 20 21 22 23
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
24
**
25
** If you are unsure which license is appropriate for your use, please
hjk's avatar
hjk committed
26
** contact the sales department at http://qt.nokia.com/contact.
con's avatar
con committed
27
**
28
**************************************************************************/
hjk's avatar
hjk committed
29

con's avatar
con committed
30 31 32 33
#include "stylehelper.h"

#include <QtGui/QPixmapCache>
#include <QtGui/QWidget>
34 35 36 37
#include <QtCore/QRect>
#include <QtGui/QPainter>
#include <QtGui/QApplication>
#include <QtGui/QPalette>
38 39
#include <QtGui/QStyleOption>
#include <QtCore/QObject>
con's avatar
con committed
40 41

// Clamps float color values within (0, 255)
hjk's avatar
hjk committed
42 43
static int clamp(float x)
{
con's avatar
con committed
44 45 46 47 48 49
    const int val = x > 255 ? 255 : static_cast<int>(x);
    return val < 0 ? 0 : val;
}

// Clamps float color values within (0, 255)
/*
hjk's avatar
hjk committed
50 51
static int range(float x, int min, int max)
{
con's avatar
con committed
52 53 54 55 56
    int val = x > max ? max : x;
    return val < min ? min : val;
}
*/

57 58
namespace Utils {

59 60 61 62 63 64 65 66 67 68
QColor StyleHelper::mergedColors(const QColor &colorA, const QColor &colorB, int factor)
{
    const int maxFactor = 100;
    QColor tmp = colorA;
    tmp.setRed((tmp.red() * factor) / maxFactor + (colorB.red() * (maxFactor - factor)) / maxFactor);
    tmp.setGreen((tmp.green() * factor) / maxFactor + (colorB.green() * (maxFactor - factor)) / maxFactor);
    tmp.setBlue((tmp.blue() * factor) / maxFactor + (colorB.blue() * (maxFactor - factor)) / maxFactor);
    return tmp;
}

con's avatar
con committed
69 70
qreal StyleHelper::sidebarFontSize()
{
Oswald Buddenhagen's avatar
Oswald Buddenhagen committed
71
#if defined(Q_WS_MAC)
72
    return 10;
con's avatar
con committed
73 74 75 76 77 78 79 80 81 82 83 84 85 86 87
#else
    return 7.5;
#endif
}

QPalette StyleHelper::sidebarFontPalette(const QPalette &original)
{
    QPalette palette = original;
    palette.setColor(QPalette::Active, QPalette::Text, panelTextColor());
    palette.setColor(QPalette::Active, QPalette::WindowText, panelTextColor());
    palette.setColor(QPalette::Inactive, QPalette::Text, panelTextColor().darker());
    palette.setColor(QPalette::Inactive, QPalette::WindowText, panelTextColor().darker());
    return palette;
}

88
QColor StyleHelper::panelTextColor(bool lightColored)
con's avatar
con committed
89 90
{
    //qApp->palette().highlightedText().color();
91 92 93 94
    if (!lightColored)
        return Qt::white;
    else
        return Qt::black;
con's avatar
con committed
95 96 97
}

QColor StyleHelper::m_baseColor(0x666666);
98
QColor StyleHelper::m_requestedBaseColor(0x666666);
con's avatar
con committed
99

100
QColor StyleHelper::baseColor(bool lightColored)
con's avatar
con committed
101
{
102 103 104 105
    if (!lightColored)
        return m_baseColor;
    else
        return m_baseColor.lighter(230);
con's avatar
con committed
106 107
}

108
QColor StyleHelper::highlightColor(bool lightColored)
con's avatar
con committed
109
{
110 111 112
    QColor result = baseColor(lightColored);
    if (!lightColored)
        result.setHsv(result.hue(),
con's avatar
con committed
113 114
                  clamp(result.saturation()),
                  clamp(result.value() * 1.16));
115 116 117 118
    else
        result.setHsv(result.hue(),
                  clamp(result.saturation()),
                  clamp(result.value() * 1.06));
con's avatar
con committed
119 120 121
    return result;
}

122
QColor StyleHelper::shadowColor(bool lightColored)
con's avatar
con committed
123
{
124
    QColor result = baseColor(lightColored);
con's avatar
con committed
125 126 127 128 129 130
    result.setHsv(result.hue(),
                  clamp(result.saturation() * 1.1),
                  clamp(result.value() * 0.70));
    return result;
}

131
QColor StyleHelper::borderColor(bool lightColored)
con's avatar
con committed
132
{
133
    QColor result = baseColor(lightColored);
con's avatar
con committed
134 135 136 137 138 139
    result.setHsv(result.hue(),
                  result.saturation(),
                  result.value() / 2);
    return result;
}

140 141 142 143
// We try to ensure that the actual color used are within
// reasonalbe bounds while generating the actual baseColor
// from the users request.
void StyleHelper::setBaseColor(const QColor &newcolor)
con's avatar
con committed
144
{
145 146 147 148 149 150 151
    m_requestedBaseColor = newcolor;

    QColor color;
    color.setHsv(newcolor.hue(),
                 newcolor.saturation() * 0.7,
                 64 + newcolor.value() / 3);

con's avatar
con committed
152 153 154 155 156 157 158
    if (color.isValid() && color != m_baseColor) {
        m_baseColor = color;
        foreach (QWidget *w, QApplication::topLevelWidgets())
            w->update();
    }
}

159
static void verticalGradientHelper(QPainter *p, const QRect &spanRect, const QRect &rect, bool lightColored)
con's avatar
con committed
160
{
161 162
    QColor highlight = StyleHelper::highlightColor(lightColored);
    QColor shadow = StyleHelper::shadowColor(lightColored);
con's avatar
con committed
163
    QLinearGradient grad(spanRect.topRight(), spanRect.topLeft());
164
    grad.setColorAt(0, highlight.lighter(117));
165
    grad.setColorAt(1, shadow.darker(109));
con's avatar
con committed
166 167 168 169 170
    p->fillRect(rect, grad);

    QColor light(255, 255, 255, 80);
    p->setPen(light);
    p->drawLine(rect.topRight() - QPoint(1, 0), rect.bottomRight() - QPoint(1, 0));
Jens Bache-Wiig's avatar
Jens Bache-Wiig committed
171 172 173
    QColor dark(0, 0, 0, 90);
    p->setPen(dark);
    p->drawLine(rect.topLeft(), rect.bottomLeft());
174 175
}

176
void StyleHelper::verticalGradient(QPainter *painter, const QRect &spanRect, const QRect &clipRect, bool lightColored)
177 178 179
{
    if (StyleHelper::usePixmapCache()) {
        QString key;
180
        QColor keyColor = baseColor(lightColored);
181 182
        key.sprintf("mh_vertical %d %d %d %d %d",
            spanRect.width(), spanRect.height(), clipRect.width(),
183
            clipRect.height(), keyColor.rgb());;
184 185 186 187 188 189

        QPixmap pixmap;
        if (!QPixmapCache::find(key, pixmap)) {
            pixmap = QPixmap(clipRect.size());
            QPainter p(&pixmap);
            QRect rect(0, 0, clipRect.width(), clipRect.height());
190
            verticalGradientHelper(&p, spanRect, rect, lightColored);
191 192 193
            p.end();
            QPixmapCache::insert(key, pixmap);
        }
con's avatar
con committed
194 195

        painter->drawPixmap(clipRect.topLeft(), pixmap);
196
    } else {
197
        verticalGradientHelper(painter, spanRect, clipRect, lightColored);
con's avatar
con committed
198 199 200
    }
}

201
static void horizontalGradientHelper(QPainter *p, const QRect &spanRect, const
202
QRect &rect, bool lightColored)
con's avatar
con committed
203
{
204 205 206
    QColor base = StyleHelper::baseColor(lightColored);
    QColor highlight = StyleHelper::highlightColor(lightColored);
    QColor shadow = StyleHelper::shadowColor(lightColored);
con's avatar
con committed
207
    QLinearGradient grad(rect.topLeft(), rect.bottomLeft());
208
    grad.setColorAt(0, highlight.lighter(120));
209
    if (rect.height() == StyleHelper::navigationWidgetHeight()) {
210
        grad.setColorAt(0.4, highlight);
211 212
        grad.setColorAt(0.401, base);
    }
213
    grad.setColorAt(1, shadow);
con's avatar
con committed
214 215 216
    p->fillRect(rect, grad);

    QLinearGradient shadowGradient(spanRect.topLeft(), spanRect.topRight());
217 218 219 220 221 222 223 224 225
        shadowGradient.setColorAt(0, QColor(0, 0, 0, 30));
    QColor lighterHighlight;
    if (!lightColored)
        lighterHighlight = highlight.lighter(130);
    else
        lighterHighlight = highlight.lighter(90);
    lighterHighlight.setAlpha(100);
    shadowGradient.setColorAt(0.7, lighterHighlight);
        shadowGradient.setColorAt(1, QColor(0, 0, 0, 40));
con's avatar
con committed
226 227 228
    p->fillRect(rect, shadowGradient);
}

229
void StyleHelper::horizontalGradient(QPainter *painter, const QRect &spanRect, const QRect &clipRect, bool lightColored)
con's avatar
con committed
230
{
231 232
    if (StyleHelper::usePixmapCache()) {
        QString key;
233
        QColor keyColor = baseColor(lightColored);
234
        key.sprintf("mh_horizontal %d %d %d %d %d %d",
235
            spanRect.width(), spanRect.height(), clipRect.width(),
236
            clipRect.height(), keyColor.rgb(), spanRect.x());
237 238 239 240 241 242

        QPixmap pixmap;
        if (!QPixmapCache::find(key, pixmap)) {
            pixmap = QPixmap(clipRect.size());
            QPainter p(&pixmap);
            QRect rect = QRect(0, 0, clipRect.width(), clipRect.height());
243
            horizontalGradientHelper(&p, spanRect, rect, lightColored);
244 245 246 247 248 249 250
            p.end();
            QPixmapCache::insert(key, pixmap);
        }

        painter->drawPixmap(clipRect.topLeft(), pixmap);

    } else {
251
        horizontalGradientHelper(painter, spanRect, clipRect, lightColored);
con's avatar
con committed
252
    }
253
}
con's avatar
con committed
254

255 256
static void menuGradientHelper(QPainter *p, const QRect &spanRect, const QRect &rect)
{
con's avatar
con committed
257
    QLinearGradient grad(spanRect.topLeft(), spanRect.bottomLeft());
258
    QColor menuColor = StyleHelper::mergedColors(StyleHelper::baseColor(), QColor(244, 244, 244), 25);
con's avatar
con committed
259 260 261
    grad.setColorAt(0, menuColor.lighter(112));
    grad.setColorAt(1, menuColor);
    p->fillRect(rect, grad);
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
void StyleHelper::drawArrow(QStyle::PrimitiveElement element, QPainter *painter, const QStyleOption *option)
{
    // From windowsstyle but modified to enable AA
    if (option->rect.width() <= 1 || option->rect.height() <= 1)
        return;

    QRect r = option->rect;
    int size = qMin(r.height(), r.width());
    QPixmap pixmap;
    QString pixmapName;
    pixmapName.sprintf("arrow-%s-%d-%d-%d-%lld",
                       "$qt_ia",
                       uint(option->state), element,
                       size, option->palette.cacheKey());
    if (!QPixmapCache::find(pixmapName, pixmap)) {
        int border = size/5;
        int sqsize = 2*(size/2);
        QImage image(sqsize, sqsize, QImage::Format_ARGB32);
        image.fill(Qt::transparent);
        QPainter imagePainter(&image);
        imagePainter.setRenderHint(QPainter::Antialiasing, true);
        imagePainter.translate(0.5, 0.5);
        QPolygon a;
        switch (element) {
            case QStyle::PE_IndicatorArrowUp:
                a.setPoints(3, border, sqsize/2,  sqsize/2, border,  sqsize - border, sqsize/2);
                break;
            case QStyle::PE_IndicatorArrowDown:
                a.setPoints(3, border, sqsize/2,  sqsize/2, sqsize - border,  sqsize - border, sqsize/2);
                break;
            case QStyle::PE_IndicatorArrowRight:
                a.setPoints(3, sqsize - border, sqsize/2,  sqsize/2, border,  sqsize/2, sqsize - border);
                break;
            case QStyle::PE_IndicatorArrowLeft:
                a.setPoints(3, border, sqsize/2,  sqsize/2, border,  sqsize/2, sqsize - border);
                break;
            default:
                break;
        }

        int bsx = 0;
        int bsy = 0;

        if (option->state & QStyle::State_Sunken) {
            bsx = qApp->style()->pixelMetric(QStyle::PM_ButtonShiftHorizontal);
            bsy = qApp->style()->pixelMetric(QStyle::PM_ButtonShiftVertical);
        }

        QRect bounds = a.boundingRect();
        int sx = sqsize / 2 - bounds.center().x() - 1;
        int sy = sqsize / 2 - bounds.center().y() - 1;
        imagePainter.translate(sx + bsx, sy + bsy);

        if (!(option->state & QStyle::State_Enabled)) {
            QColor foreGround(150, 150, 150, 150);
            imagePainter.setBrush(option->palette.mid().color());
            imagePainter.setPen(option->palette.mid().color());
        } else {
            QColor shadow(0, 0, 0, 100);
            imagePainter.translate(0, 1);
            imagePainter.setPen(shadow);
            imagePainter.setBrush(shadow);
            QColor foreGround(255, 255, 255, 210);
            imagePainter.drawPolygon(a);
            imagePainter.translate(0, -1);
            imagePainter.setPen(foreGround);
            imagePainter.setBrush(foreGround);
        }
        imagePainter.drawPolygon(a);
        imagePainter.end();
        pixmap = QPixmap::fromImage(image);
        QPixmapCache::insert(pixmapName, pixmap);
    }
    int xOffset = r.x() + (r.width() - size)/2;
    int yOffset = r.y() + (r.height() - size)/2;
    painter->drawPixmap(xOffset, yOffset, pixmap);
}

342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358
void StyleHelper::menuGradient(QPainter *painter, const QRect &spanRect, const QRect &clipRect)
{
    if (StyleHelper::usePixmapCache()) {
        QString key;
        key.sprintf("mh_menu %d %d %d %d %d",
            spanRect.width(), spanRect.height(), clipRect.width(),
            clipRect.height(), StyleHelper::baseColor().rgb());

        QPixmap pixmap;
        if (!QPixmapCache::find(key, pixmap)) {
            pixmap = QPixmap(clipRect.size());
            QPainter p(&pixmap);
            QRect rect = QRect(0, 0, clipRect.width(), clipRect.height());
            menuGradientHelper(&p, spanRect, rect);
            p.end();
            QPixmapCache::insert(key, pixmap);
        }
con's avatar
con committed
359 360

        painter->drawPixmap(clipRect.topLeft(), pixmap);
361 362
    } else {
        menuGradientHelper(painter, spanRect, clipRect);
con's avatar
con committed
363 364
    }
}
365

366
// Draws a cached pixmap with shadow
367 368
void StyleHelper::drawIconWithShadow(const QIcon &icon, const QRect &rect,
                                     QPainter *p, QIcon::Mode iconMode, int radius, const QColor &color, const QPoint &offset)
369 370
{
    QPixmap cache;
371 372
    QString pixmapName = QString("icon %0 %1 %2").arg(icon.cacheKey()).arg(iconMode).arg(rect.height());

373
    if (!QPixmapCache::find(pixmapName, cache)) {
374
        QPixmap px = icon.pixmap(rect.size());
375 376
        cache = QPixmap(px.size() + QSize(radius * 2, radius * 2));
        cache.fill(Qt::transparent);
377

378
        QPainter cachePainter(&cache);
379 380 381 382 383 384 385 386 387 388 389 390 391
        if (iconMode == QIcon::Disabled) {
            QImage im = px.toImage().convertToFormat(QImage::Format_ARGB32);
            for (int y=0; y<im.height(); ++y) {
                QRgb *scanLine = (QRgb*)im.scanLine(y);
                for (int x=0; x<im.width(); ++x) {
                    QRgb pixel = *scanLine;
                    char intensity = qGray(pixel);
                    *scanLine = qRgba(intensity, intensity, intensity, qAlpha(pixel));
                    ++scanLine;
                }
            }
            px = QPixmap::fromImage(im);
        }
392

393
        // Draw shadow
394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415
        QImage tmp(px.size() + QSize(radius * 2, radius * 2 + 1), QImage::Format_ARGB32_Premultiplied);
        tmp.fill(Qt::transparent);

        QPainter tmpPainter(&tmp);
        tmpPainter.setCompositionMode(QPainter::CompositionMode_Source);
        tmpPainter.drawPixmap(QPoint(radius, radius), px);
        tmpPainter.end();

        // blur the alpha channel
        QImage blurred(tmp.size(), QImage::Format_ARGB32_Premultiplied);
        blurred.fill(Qt::transparent);
        QPainter blurPainter(&blurred);
        qt_blurImage(&blurPainter, tmp, radius, false, true);
        blurPainter.end();

        tmp = blurred;

        // blacken the image...
        tmpPainter.begin(&tmp);
        tmpPainter.setCompositionMode(QPainter::CompositionMode_SourceIn);
        tmpPainter.fillRect(tmp.rect(), color);
        tmpPainter.end();
416 417 418 419 420 421

        tmpPainter.begin(&tmp);
        tmpPainter.setCompositionMode(QPainter::CompositionMode_SourceIn);
        tmpPainter.fillRect(tmp.rect(), color);
        tmpPainter.end();

422
        // draw the blurred drop shadow...
423
        cachePainter.drawImage(QRect(0, 0, cache.rect().width(), cache.rect().height()), tmp);
424 425 426 427 428 429

        // Draw the actual pixmap...
        cachePainter.drawPixmap(QPoint(radius, radius) + offset, px);
        QPixmapCache::insert(pixmapName, cache);
    }

430 431 432
    QRect targetRect = cache.rect();
    targetRect.moveCenter(rect.center());
    p->drawPixmap(targetRect.topLeft() - offset, cache);
433 434
}

435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475
// Draws a CSS-like border image where the defined borders are not stretched
void StyleHelper::drawCornerImage(const QImage &img, QPainter *painter, QRect rect,
                                  int left, int top, int right, int bottom)
{
    QSize size = img.size();
    if (top > 0) { //top
        painter->drawImage(QRect(rect.left() + left, rect.top(), rect.width() -right - left, top), img,
                           QRect(left, 0, size.width() -right - left, top));
        if (left > 0) //top-left
            painter->drawImage(QRect(rect.left(), rect.top(), left, top), img,
                               QRect(0, 0, left, top));
        if (right > 0) //top-right
            painter->drawImage(QRect(rect.left() + rect.width() - right, rect.top(), right, top), img,
                               QRect(size.width() - right, 0, right, top));
    }
    //left
    if (left > 0)
        painter->drawImage(QRect(rect.left(), rect.top()+top, left, rect.height() - top - bottom), img,
                           QRect(0, top, left, size.height() - bottom - top));
    //center
    painter->drawImage(QRect(rect.left() + left, rect.top()+top, rect.width() -right - left,
                             rect.height() - bottom - top), img,
                       QRect(left, top, size.width() -right -left,
                             size.height() - bottom - top));
    if (right > 0) //right
        painter->drawImage(QRect(rect.left() +rect.width() - right, rect.top()+top, right, rect.height() - top - bottom), img,
                           QRect(size.width() - right, top, right, size.height() - bottom - top));
    if (bottom > 0) { //bottom
        painter->drawImage(QRect(rect.left() +left, rect.top() + rect.height() - bottom,
                                 rect.width() - right - left, bottom), img,
                           QRect(left, size.height() - bottom,
                                 size.width() - right - left, bottom));
    if (left > 0) //bottom-left
        painter->drawImage(QRect(rect.left(), rect.top() + rect.height() - bottom, left, bottom), img,
                           QRect(0, size.height() - bottom, left, bottom));
    if (right > 0) //bottom-right
        painter->drawImage(QRect(rect.left() + rect.width() - right, rect.top() + rect.height() - bottom, right, bottom), img,
                           QRect(size.width() - right, size.height() - bottom, right, bottom));
    }
}

476
} // namespace Utils