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-rw-r--r--src/datavis3d/utils/utils.cpp234
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diff --git a/src/datavis3d/utils/utils.cpp b/src/datavis3d/utils/utils.cpp
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--- a/src/datavis3d/utils/utils.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2013 Digia Plc
-** All rights reserved.
-** For any questions to Digia, please use contact form at http://qt.digia.com
-**
-** This file is part of the QtDataVis3D module.
-**
-** Licensees holding valid Qt Enterprise licenses may use this file in
-** accordance with the Qt Enterprise License Agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and Digia.
-**
-** If you have questions regarding the use of this file, please use
-** contact form at http://qt.digia.com
-**
-****************************************************************************/
-
-#include "utils_p.h"
-
-#include <QVector3D>
-#include <QColor>
-#include <QPainter>
-#include <QPoint>
-#include <QImage>
-
-#include <qmath.h>
-
-#include <QDebug>
-
-QT_DATAVIS3D_BEGIN_NAMESPACE
-
-#define NUM_IN_POWER(y, x) for (;y<x;y<<=1)
-#define MIN_POWER 32
-
-GLuint Utils::getNearestPowerOfTwo(GLuint value, GLuint &padding)
-{
- GLuint powOfTwoValue = MIN_POWER;
- NUM_IN_POWER(powOfTwoValue, value);
- padding = powOfTwoValue - value;
- return powOfTwoValue;
-}
-
-QVector3D Utils::vectorFromColor(const QColor &color)
-{
- return QVector3D(color.redF(), color.greenF(), color.blueF());
-}
-
-void Utils::printText(QPainter *painter, const QString &text, const QSize &position,
- bool absoluteCoords, qreal rotation, qreal scale)
-{
- painter->save();
- painter->setCompositionMode(QPainter::CompositionMode_Source);
- painter->setPen(Qt::black); // TODO: Use black, as nothing works
- QFont bgrFont = QFont(QStringLiteral("Arial"), 17);
- QFont valueFont = QFont(QStringLiteral("Arial"), 11);
- valueFont.setBold(true);
- painter->setFont(bgrFont);
- QFontMetrics valueFM(valueFont);
- QFontMetrics bgrFM(bgrFont);
- int valueStrLen = valueFM.width(text);
- int bgrStrLen = 0;
- int bgrHeight = valueFM.height() + 8;
- QString bgrStr = QString();
- do {
- bgrStr.append(QStringLiteral("I"));
- bgrStrLen = bgrFM.width(bgrStr);
- } while (bgrStrLen <= (valueStrLen + 8));
-#if 0
- // Hack solution, as drawRect doesn't work
- painter->drawText(position.width() - (bgrStrLen / 2),
- position.height() - bgrHeight,
- bgrStrLen, bgrHeight,
- Qt::AlignCenter | Qt::AlignVCenter,
- bgrStr);
- //painter->setPen(d_ptr->m_textColor);
- painter->setPen(Qt::lightGray); // TODO: Use lightGray, as nothing works
- painter->setFont(valueFont);
- painter->drawText(position.width() - (valueStrLen / 2),
- position.height() - bgrHeight,
- valueStrLen, bgrHeight,
- Qt::AlignCenter | Qt::AlignVCenter,
- text);
-#else
- //qDebug() << painter->window() << painter->viewport();
- painter->scale(scale, scale);
- if (absoluteCoords) {
- // This assumes absolute screen coordinates
- painter->translate(position.width() - (((float)bgrStrLen / 2.0f)
- * qCos(qDegreesToRadians(rotation)))
- + (((float)bgrHeight / 2.0f) * qSin(qDegreesToRadians(rotation))),
- position.height()
- - ((((float)bgrHeight / 2.0f) * qCos(qDegreesToRadians(rotation)))
- + (((float)bgrStrLen / 2.0f) * qSin(qDegreesToRadians(rotation)))));
- } else {
- // This calculates y as a distance from screen bottom
- painter->translate(position.width() - (((float)bgrStrLen / 2.0f)
- * qCos(qDegreesToRadians(rotation)))
- + (((float)bgrHeight / 2.0f) * qSin(qDegreesToRadians(rotation))),
- painter->window().height() - position.height()
- - ((((float)bgrHeight / 2.0f) * qCos(qDegreesToRadians(rotation)))
- + (((float)bgrStrLen / 2.0f) * qSin(qDegreesToRadians(rotation)))));
- }
- //qDebug() << painter->window().height() - position.height()
- // - ((((float)bgrHeight / 2.0f) * qCos(qDegreesToRadians(rotation)))
- // + (((float)bgrStrLen / 2.0f) * qSin(qDegreesToRadians(rotation))));
- painter->rotate(rotation);
- painter->drawText(0, 0,
- bgrStrLen, bgrHeight,
- Qt::AlignCenter | Qt::AlignVCenter,
- bgrStr);
- painter->setPen(Qt::lightGray); // TODO: Use lightGray, as nothing works
- painter->setFont(valueFont);
- painter->drawText(6, 0,
- valueStrLen, bgrHeight,
- Qt::AlignCenter | Qt::AlignVCenter,
- text);
- painter->resetTransform();
-#endif
- painter->restore();
-}
-
-QImage Utils::printTextToImage(const QFont &font, const QString &text, const QColor &bgrColor,
- const QColor &txtColor, QDataVis::LabelTransparency transparency)
-{
- GLuint paddingWidth = 15;
- GLuint paddingHeight = 15;
- // Calculate text dimensions
- QFont valueFont = font;
- valueFont.setPointSize(30);
- QFontMetrics valueFM(valueFont);
- int valueStrWidth = valueFM.width(text);
- int valueStrHeight = valueFM.height();
- QSize labelSize;
-
-#if defined(Q_OS_ANDROID)
- // Android 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
- GLuint prePadding = 10;
- labelSize = QSize(valueStrWidth + prePadding, valueStrHeight + prePadding);
- //qDebug() << "label size before padding" << labelSize;
- labelSize.setWidth(getNearestPowerOfTwo(labelSize.width(), paddingWidth));
- labelSize.setHeight(getNearestPowerOfTwo(labelSize.height(), paddingHeight));
- paddingWidth += prePadding;
- paddingHeight += prePadding;
- paddingWidth /= 2;
- paddingHeight /= 2;
- //qDebug() << "label size after padding" << labelSize << paddingWidth << paddingHeight;
-#else
- if (QDataVis::TransparencyNoBackground == transparency)
- labelSize = QSize(valueStrWidth, valueStrHeight);
- else
- labelSize = QSize(valueStrWidth + paddingWidth * 2, valueStrHeight + paddingHeight * 2);
-#endif
-
- // Create image
- QImage image = QImage(labelSize, QImage::Format_ARGB32);
- image.fill(Qt::transparent);
-
- // Init painter
- QPainter painter(&image);
- // Paint text
- painter.setRenderHint(QPainter::Antialiasing, true);
- painter.setCompositionMode(QPainter::CompositionMode_Source);
- switch (transparency) {
- // TODO: Texture size padding fix for Android f**ks this up for axis labels. Fix or disable for android.
- case QDataVis::TransparencyNoBackground: {
- painter.setFont(valueFont);
- painter.setPen(txtColor);
- painter.drawText(0, 0,
- valueStrWidth, valueStrHeight,
- Qt::AlignCenter | Qt::AlignVCenter,
- text);
- break;
- }
- case QDataVis::TransparencyFromTheme: {
- painter.setBrush(QBrush(bgrColor));
- painter.setPen(bgrColor);
- painter.drawRoundedRect(0, 0, labelSize.width(), labelSize.height(), 10.0, 10.0f);
- painter.setFont(valueFont);
- painter.setPen(txtColor);
- painter.drawText(paddingWidth, paddingHeight,
- valueStrWidth, valueStrHeight,
- Qt::AlignCenter | Qt::AlignVCenter,
- text);
- break;
- }
- case QDataVis::TransparencyNone: {
- painter.setBrush(QBrush(bgrColor));
- painter.setPen(bgrColor);
- painter.drawRect(0, 0, labelSize.width(), labelSize.height());
- painter.setFont(valueFont);
- painter.setPen(txtColor);
- painter.drawText(paddingWidth, paddingHeight,
- valueStrWidth, valueStrHeight,
- Qt::AlignCenter | Qt::AlignVCenter,
- text);
- break;
- }
- }
- return image;
-}
-
-QVector3D Utils::getSelection(QPoint mousepos, int height)
-{
- QVector3D selectedColor;
-
- //#if defined(QT_OPENGL_ES_2)
- // This is the only one that works with ANGLE (ES 2.0)
- // Item count will be limited to 256*256*256
- GLubyte pixel[4];
- glReadPixels(mousepos.x(), height - mousepos.y(), 1, 1,
- GL_RGBA, GL_UNSIGNED_BYTE, (void *)pixel);
- //qDebug() << "rgba" << pixel[0] << pixel[1] << pixel[2];// << pixel[3];
- //#else
- //// These work with desktop OpenGL
- //// They offer a lot higher possible object count and a possibility to use object ids
- //GLuint pixel[3];
- //glReadPixels(mousepos.x(), height - mousepos.y(), 1, 1,
- // GL_RGB, GL_UNSIGNED_INT, (void *)pixel);
- //qDebug() << "rgba" << pixel[0] << pixel[1] << pixel[2];// << pixel[3];
-
- //GLfloat pixel3[3];
- //glReadPixels(mousepos.x(), height - mousepos.y(), 1, 1,
- // GL_RGB, GL_FLOAT, (void *)pixel3);
- //qDebug() << "rgba" << pixel3[0] << pixel3[1] << pixel3[2];// << pixel[3];
- //#endif
- selectedColor = QVector3D(pixel[0], pixel[1], pixel[2]);
- //qDebug() << selectedColor;
-
- return selectedColor;
-}
-
-QT_DATAVIS3D_END_NAMESPACE
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-24 00:22:11 +0000