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-rw-r--r--src/datavisualization/utils/utils.cpp144
1 files changed, 86 insertions, 58 deletions
diff --git a/src/datavisualization/utils/utils.cpp b/src/datavisualization/utils/utils.cpp
index 534c79f9..cb64eb8f 100644
--- a/src/datavisualization/utils/utils.cpp
+++ b/src/datavisualization/utils/utils.cpp
@@ -17,6 +17,7 @@
****************************************************************************/
#include "utils_p.h"
+#include "qutils.h"
#include <QtGui/QPainter>
@@ -55,65 +56,58 @@ QImage Utils::printTextToImage(const QFont &font, const QString &text, const QCo
const QColor &txtColor, bool labelBackground,
bool borders, int maxLabelWidth)
{
- if (maxTextureSize == 0)
- glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTextureSize);
-
+ if (maxTextureSize == 0) {
+ QOpenGLContext::currentContext()->functions()->glGetIntegerv(
+ GL_MAX_TEXTURE_SIZE, &maxTextureSize);
+ }
GLuint paddingWidth = 20;
-#if !defined(QT_OPENGL_ES_2) // TODO fix ifdef for dynamic OpenGL
GLuint paddingHeight = 20;
-#endif
+ GLuint prePadding = 20;
+ GLint targetWidth = maxTextureSize;
+
// Calculate text dimensions
QFont valueFont = font;
valueFont.setPointSize(textureFontSize);
QFontMetrics valueFM(valueFont);
int valueStrWidth = valueFM.width(text);
-#if defined(QT_OPENGL_ES_2)
+
// ES2 needs to use maxLabelWidth always (when given) because of the power of 2 -issue.
- if (maxLabelWidth)
-#else
- if (maxLabelWidth && labelBackground)
-#endif
+ if (maxLabelWidth && (labelBackground || Utils::isOpenGLES()))
valueStrWidth = maxLabelWidth;
int valueStrHeight = valueFM.height();
valueStrWidth += paddingWidth / 2; // Fix clipping problem with skewed fonts (italic or italic-style)
QSize labelSize;
qreal fontRatio = 1.0;
-#if defined(QT_OPENGL_ES_2) // TODO fix ifdef for dynamic OpenGL
- // Test if text with slighly smaller font would fit into one step smaller texture
- // ie. if the text is just exceeded the smaller texture boundary, it would
- // make a label with large empty space
- GLuint prePadding = 20;
- GLint targetWidth = maxTextureSize;
- uint testWidth = getNearestPowerOfTwo(valueStrWidth + prePadding) >> 1;
- int diffToFit = (valueStrWidth + prePadding) - testWidth;
- int maxSqueeze = int((valueStrWidth + prePadding) * 0.1f);
- if (diffToFit < maxSqueeze && maxTextureSize > GLint(testWidth))
- targetWidth = testWidth;
-#endif
+ if (Utils::isOpenGLES()) {
+ // Test if text with slighly smaller font would fit into one step smaller texture
+ // ie. if the text is just exceeded the smaller texture boundary, it would
+ // make a label with large empty space
+ uint testWidth = getNearestPowerOfTwo(valueStrWidth + prePadding) >> 1;
+ int diffToFit = (valueStrWidth + prePadding) - testWidth;
+ int maxSqueeze = int((valueStrWidth + prePadding) * 0.1f);
+ if (diffToFit < maxSqueeze && maxTextureSize > GLint(testWidth))
+ targetWidth = testWidth;
+ }
bool sizeOk = false;
int currentFontSize = textureFontSize;
do {
-#if defined(QT_OPENGL_ES_2) // TODO fix ifdef for dynamic OpenGL
- // ES2 can't handle textures with dimensions not in power of 2. Resize labels accordingly.
- // Add some padding before converting to power of two to avoid too tight fit
- labelSize = QSize(valueStrWidth + prePadding, valueStrHeight + prePadding);
- labelSize.setWidth(getNearestPowerOfTwo(labelSize.width()));
- labelSize.setHeight(getNearestPowerOfTwo(labelSize.height()));
-#else
- if (!labelBackground)
- labelSize = QSize(valueStrWidth, valueStrHeight);
- else
- labelSize = QSize(valueStrWidth + paddingWidth * 2, valueStrHeight + paddingHeight * 2);
-#endif
+ if (Utils::isOpenGLES()) {
+ // ES2 can't handle textures with dimensions not in power of 2. Resize labels accordingly.
+ // Add some padding before converting to power of two to avoid too tight fit
+ labelSize = QSize(valueStrWidth + prePadding, valueStrHeight + prePadding);
+ labelSize.setWidth(getNearestPowerOfTwo(labelSize.width()));
+ labelSize.setHeight(getNearestPowerOfTwo(labelSize.height()));
+ } else {
+ if (!labelBackground)
+ labelSize = QSize(valueStrWidth, valueStrHeight);
+ else
+ labelSize = QSize(valueStrWidth + paddingWidth * 2, valueStrHeight + paddingHeight * 2);
+ }
-#if defined(QT_OPENGL_ES_2)
if (!maxTextureSize || (labelSize.width() <= maxTextureSize
- && labelSize.width() <= targetWidth)) {
-#else
- if (!maxTextureSize || labelSize.width() <= maxTextureSize) {
-#endif
+ && (labelSize.width() <= targetWidth || !Utils::isOpenGLES()))) {
// Make sure the label is not too wide
sizeOk = true;
} else if (--currentFontSize == 4) {
@@ -124,11 +118,7 @@ QImage Utils::printTextToImage(const QFont &font, const QString &text, const QCo
// Reduce font size and try again
valueFont.setPointSize(currentFontSize);
QFontMetrics currentValueFM(valueFont);
-#if defined(QT_OPENGL_ES_2)
- if (maxLabelWidth)
-#else
- if (maxLabelWidth && labelBackground)
-#endif
+ if (maxLabelWidth && (labelBackground || Utils::isOpenGLES()))
valueStrWidth = maxLabelWidth * fontRatio;
else
valueStrWidth = currentValueFM.width(text);
@@ -149,18 +139,18 @@ QImage Utils::printTextToImage(const QFont &font, const QString &text, const QCo
painter.setFont(valueFont);
if (!labelBackground) {
painter.setPen(txtColor);
-#if defined(QT_OPENGL_ES_2)
- painter.drawText((labelSize.width() - valueStrWidth) / 2.0f,
- (labelSize.height() - valueStrHeight) / 2.0f,
- valueStrWidth, valueStrHeight,
- Qt::AlignCenter | Qt::AlignVCenter,
- text);
-#else
- painter.drawText(0, 0,
- valueStrWidth, valueStrHeight,
- Qt::AlignCenter | Qt::AlignVCenter,
- text);
-#endif
+ if (Utils::isOpenGLES()) {
+ painter.drawText((labelSize.width() - valueStrWidth) / 2.0f,
+ (labelSize.height() - valueStrHeight) / 2.0f,
+ valueStrWidth, valueStrHeight,
+ Qt::AlignCenter | Qt::AlignVCenter,
+ text);
+ } else {
+ painter.drawText(0, 0,
+ valueStrWidth, valueStrHeight,
+ Qt::AlignCenter | Qt::AlignVCenter,
+ text);
+ }
} else {
painter.setBrush(QBrush(bgrColor));
qreal radius = 10.0 * fontRatio;
@@ -189,8 +179,9 @@ QVector4D Utils::getSelection(QPoint mousepos, int height)
// This is the only one that works with OpenGL ES 2.0, so we're forced to use it
// Item count will be limited to 256*256*256
GLubyte pixel[4] = {255, 255, 255, 255};
- glReadPixels(mousepos.x(), height - mousepos.y(), 1, 1, GL_RGBA, GL_UNSIGNED_BYTE,
- (void *)pixel);
+ QOpenGLContext::currentContext()->functions()->glReadPixels(mousepos.x(), height - mousepos.y(),
+ 1, 1, GL_RGBA, GL_UNSIGNED_BYTE,
+ (void *)pixel);
QVector4D selectedColor(pixel[0], pixel[1], pixel[2], pixel[3]);
return selectedColor;
}
@@ -322,4 +313,41 @@ QQuaternion Utils::calculateRotation(const QVector3D &xyzRotations)
return totalRotation;
}
+bool Utils::isOpenGLES()
+{
+#if defined(QT_OPENGL_ES_2)
+ return true;
+#elif (QT_VERSION < QT_VERSION_CHECK(5, 3, 0))
+ return false;
+#else
+ static bool resolved = false;
+ static bool isES = false;
+ if (!resolved) {
+ QOpenGLContext *ctx = QOpenGLContext::currentContext();
+ QWindow *dummySurface = 0;
+ if (!ctx) {
+ QSurfaceFormat surfaceFormat = qDefaultSurfaceFormat();
+ dummySurface = new QWindow();
+ dummySurface->setSurfaceType(QWindow::OpenGLSurface);
+ dummySurface->setFormat(surfaceFormat);
+ dummySurface->create();
+ ctx = new QOpenGLContext;
+ ctx->setFormat(surfaceFormat);
+ ctx->create();
+ ctx->makeCurrent(dummySurface);
+ }
+
+ isES = ctx->isOpenGLES();
+ resolved = true;
+
+ if (dummySurface) {
+ ctx->doneCurrent();
+ delete ctx;
+ delete dummySurface;
+ }
+ }
+ return isES;
+#endif
+}
+
QT_END_NAMESPACE_DATAVISUALIZATION
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-04 00:25:24 +0000