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C++ DImg::bitBlendImage方法代码示例

本文整理汇总了C++中DImg::bitBlendImage方法的典型用法代码示例。如果您正苦于以下问题:C++ DImg::bitBlendImage方法的具体用法?C++ DImg::bitBlendImage怎么用?C++ DImg::bitBlendImage使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在DImg的用法示例。


在下文中一共展示了DImg::bitBlendImage方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: preparePreview

void LensAutoFixTool::preparePreview()
{
    // Settings information must be get before to disable settings view.
    LensFunContainer settings = d->cameraSelector->settings();
    d->settingsView->assignFilterSettings(settings);
    ImageIface* const iface   = d->previewWidget->imageIface();
    DImg preview              = iface->preview();

    if (d->showGrid->isChecked())
    {
        QBitmap pattern(9, 9);
        pattern.clear();
        QPainter p1(&pattern);
        p1.setPen(QPen(Qt::black, 1));
        p1.drawLine(5, 0, 5, 9);
        p1.drawLine(0, 5, 9, 5);
        p1.end();

        QPixmap pix(preview.size());
        pix.fill(Qt::transparent);
        QPainter p2(&pix);
        p2.setPen(QPen(Qt::gray, 1));
        p2.fillRect(0, 0, pix.width(), pix.height(), QBrush(pattern));
        p2.end();
        DImg grid(pix.toImage());

        DColorComposer* const composer            = DColorComposer::getComposer(DColorComposer::PorterDuffNone);
        DColorComposer::MultiplicationFlags flags = DColorComposer::NoMultiplication;

        // Do alpha blending of template on dest image
        preview.bitBlendImage(composer, &grid, 0, 0, preview.width(), preview.height(), 0, 0, flags);
    }

    setFilter(new LensFunFilter(&preview, this, settings));
}
开发者ID:KDE,项目名称:digikam,代码行数:35,代码来源:lensautofixtool.cpp

示例2: composeImage


//.........这里部分代码省略.........
    QRect textAreaBackgroundRect( borderWidth, borderWidth, fontWidth + 2 * spacing, fontHeight + 2 * spacing);

    // create a rectangle relative to textArea, excluding the border and spacing
    QRect textAreaTextRect( borderWidth + spacing, borderWidth + spacing, fontWidth, fontHeight );

    // create a rectangle relative to textArea, including the border,
    // for drawing the rectangle, taking into account that the width of the QPen goes in and out in equal parts
    QRect textAreaDrawRect( borderWidth / 2, borderWidth / 2, fontWidth + borderWidth + 2 * spacing,
                            fontHeight + borderWidth + 2 * spacing );

    // cut out the text area
    DImg textArea = image->copy(drawRect);

    if (textArea.isNull())
    {
        return QRect();
    }

    // compose semi-transparent background over textArea
    DColorComposer* composer = DColorComposer::getComposer(DColorComposer::PorterDuffNone);

    if (transparentBackground)
    {
        DImg transparentLayer(textAreaBackgroundRect.width(), textAreaBackgroundRect.height(), textArea.sixteenBit(), true);
        DColor transparent(backgroundColor);
        transparent.setAlpha(d->transparency);

        if (image->sixteenBit())
        {
            transparent.convertToSixteenBit();
        }

        transparentLayer.fill(transparent);
        textArea.bitBlendImage(composer, &transparentLayer, 0, 0, transparentLayer.width(), transparentLayer.height(),
                               textAreaBackgroundRect.x(), textAreaBackgroundRect.y());
    }

    DImg textNotDrawn;

    if (textArea.sixteenBit())
    {
        textNotDrawn = textArea.copy();
        textNotDrawn.convertToEightBit();
    }
    else
    {
        textNotDrawn = textArea;
    }

    // We have no direct pixel access to font rendering, so now we need to use Qt/X11 for the drawing

    // convert text area to pixmap
    QPixmap pixmap;

    if (destPainter)
    {
        // We working on tool preview, deal with CM as well
        pixmap = d->iface->convertToPixmap(textNotDrawn);
    }
    else
    {
        // We working on target image. Do no apply double CM adjustment here.
        pixmap = textNotDrawn.convertToPixmap();
    }

    int fontScaleWidth  = qRound(fontWidth  / fontScale);
开发者ID:rompe,项目名称:digikam,代码行数:67,代码来源:inserttextwidget.cpp


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