QNSView Class Reference

#import <qnsview.h>

Inheritance diagram for QNSView:

Public Functions
(void)	- drawRect:
(void)	- handleMouseEvent:
(id)	- init
(id)	- initWithWidget:
(BOOL)	- isFlipped
(void)	- mouseDown:
(void)	- mouseDragged:
(void)	- mouseEntered:
(void)	- mouseExited:
(void)	- mouseMoved:
(void)	- mouseUp:
(void)	- otherMouseDown:
(void)	- otherMouseDragged:
(void)	- otherMouseUp:
(void)	- rightMouseDown:
(void)	- rightMouseDragged:
(void)	- rightMouseUp:
(void)	- setImage:

Protected Variables
Qt::MouseButtons	m_buttons
CGImageRef	m_cgImage
QWidget *	m_widget

Detailed Description

Definition at line 49 of file qnsview.h.

Functions

drawRect:()

- (void) drawRect:

(NSRect)

dirtyRect

Definition at line 104 of file qnsview.mm.

                 :(NSRect)dirtyRect
{
    if (!m_cgImage)
        return;

    CGRect dirtyCGRect = NSRectToCGRect(dirtyRect);

    NSGraphicsContext *nsGraphicsContext = [NSGraphicsContext currentContext];
    CGContextRef cgContext = (CGContextRef) [nsGraphicsContext graphicsPort];

    CGContextSaveGState( cgContext );
    int dy = dirtyCGRect.origin.y + CGRectGetMaxY(dirtyCGRect);
    CGContextTranslateCTM(cgContext, 0, dy);
    CGContextScaleCTM(cgContext, 1, -1);

    CGImageRef subImage = CGImageCreateWithImageInRect(m_cgImage, dirtyCGRect);
    CGContextDrawImage(cgContext,dirtyCGRect,subImage);

    CGContextRestoreGState(cgContext);

    CGImageRelease(subImage);

}

handleMouseEvent:()

- (void) handleMouseEvent:

(NSEvent *)

theEvent

Definition at line 133 of file qnsview.mm.

                        :(NSEvent *)theEvent;
{
    NSPoint point = [self convertPoint: [theEvent locationInWindow] fromView: nil];
    QPoint qt_localPoint(point.x,point.y);

    NSTimeInterval timestamp = [theEvent timestamp];
    ulong qt_timestamp = timestamp * 1000;

    QWindowSystemInterface::handleMouseEvent(m_widget,qt_timestamp,qt_localPoint,QPoint(),m_buttons);

}

init()

- (id) init

Definition at line 50 of file qnsview.mm.

Referenced by initWithWidget:.

{
    self = [super init];
    if (self) {
        m_cgImage = 0;
        m_widget = 0;
        m_buttons = Qt::NoButton;
    }
    return self;
}

initWithWidget:()

- (id) initWithWidget:

(QWidget *)

widget

Definition at line 61 of file qnsview.mm.

                    :(QWidget *)widget {
    self = [self init];
    if (self) {
        m_widget = widget;
    }
    return self;
}

isFlipped()

- (BOOL) isFlipped

Definition at line 128 of file qnsview.mm.

{
    return YES;
}

mouseDown:()

- (void) mouseDown:

(NSEvent *)

theEvent

Definition at line 144 of file qnsview.mm.

                     :(NSEvent *)theEvent
    {
        m_buttons |= Qt::LeftButton;
        [self handleMouseEvent:theEvent];
    }

mouseDragged:()

- (void) mouseDragged:

(NSEvent *)

theEvent

Definition at line 149 of file qnsview.mm.

                        :(NSEvent *)theEvent
    {
        if (!(m_buttons & Qt::LeftButton))
            qWarning("Internal Mousebutton tracking invalid(missing Qt::LeftButton");
        [self handleMouseEvent:theEvent];
    }

mouseEntered:()

- (void) mouseEntered:

(NSEvent *)

theEvent

Definition at line 166 of file qnsview.mm.

                    :(NSEvent *)theEvent
{
        Q_UNUSED(theEvent);
        QWindowSystemInterface::handleEnterEvent(m_widget);
}

mouseExited:()

- (void) mouseExited:

(NSEvent *)

theEvent

Definition at line 171 of file qnsview.mm.

                   :(NSEvent *)theEvent
{
        Q_UNUSED(theEvent);
        QWindowSystemInterface::handleLeaveEvent(m_widget);
}

mouseMoved:()

- (void) mouseMoved:

(NSEvent *)

theEvent

Definition at line 161 of file qnsview.mm.

                  :(NSEvent *)theEvent
{
    qDebug() << "mouseMove";
    [self handleMouseEvent:theEvent];
}

mouseUp:()

- (void) mouseUp:

(NSEvent *)

theEvent

Definition at line 155 of file qnsview.mm.

                   :(NSEvent *)theEvent
    {
        m_buttons &= QFlag(~int(Qt::LeftButton));
        [self handleMouseEvent:theEvent];
    }

otherMouseDown:()

- (void) otherMouseDown:

(NSEvent *)

theEvent

Definition at line 192 of file qnsview.mm.

                      :(NSEvent *)theEvent
{
        m_buttons |= Qt::RightButton;
    [self handleMouseEvent:theEvent];
}

otherMouseDragged:()

- (void) otherMouseDragged:

(NSEvent *)

theEvent

Definition at line 197 of file qnsview.mm.

                         :(NSEvent *)theEvent
{
        if (!(m_buttons & Qt::LeftButton))
            qWarning("Internal Mousebutton tracking invalid(missing Qt::LeftButton");
        [self handleMouseEvent:theEvent];
}

otherMouseUp:()

- (void) otherMouseUp:

(NSEvent *)

theEvent

Definition at line 203 of file qnsview.mm.

                    :(NSEvent *)theEvent
{
        m_buttons &= QFlag(~int(Qt::MiddleButton));
        [self handleMouseEvent:theEvent];
}

rightMouseDown:()

- (void) rightMouseDown:

(NSEvent *)

theEvent

Definition at line 176 of file qnsview.mm.

                      :(NSEvent *)theEvent
{
        m_buttons |= Qt::RightButton;
    [self handleMouseEvent:theEvent];
}

rightMouseDragged:()

- (void) rightMouseDragged:

(NSEvent *)

theEvent

Definition at line 181 of file qnsview.mm.

                         :(NSEvent *)theEvent
{
        if (!(m_buttons & Qt::LeftButton))
            qWarning("Internal Mousebutton tracking invalid(missing Qt::LeftButton");
        [self handleMouseEvent:theEvent];
}

rightMouseUp:()

- (void) rightMouseUp:

(NSEvent *)

theEvent

Definition at line 187 of file qnsview.mm.

                    :(NSEvent *)theEvent
{
        m_buttons &= QFlag(~int(Qt::RightButton));
        [self handleMouseEvent:theEvent];
}

setImage:()

- (void) setImage:

(QImage *)

image

Definition at line 69 of file qnsview.mm.

                 :(QImage *)image
{
    CGImageRelease(m_cgImage);

    const uchar *imageData = image->bits();
    int bitDepth = image->depth();
    int colorBufferSize = 8;
    int bytesPrLine = image->bytesPerLine();
    int width = image->width();
    int height = image->height();

    CGColorSpaceRef cgColourSpaceRef = CGColorSpaceCreateDeviceRGB();

    CGDataProviderRef cgDataProviderRef = CGDataProviderCreateWithData(
                NULL,
                imageData,
                image->byteCount(),
                NULL);

    m_cgImage = CGImageCreate(width,
                              height,
                              colorBufferSize,
                              bitDepth,
                              bytesPrLine,
                              cgColourSpaceRef,
                              kCGImageAlphaNone,
                              cgDataProviderRef,
                              NULL,
                              false,
                              kCGRenderingIntentDefault);

    CGColorSpaceRelease(cgColourSpaceRef);

}

Properties

m_buttons

- (MouseButtons) QNSView:

protected

Definition at line 52 of file qnsview.h.

Referenced by init.

m_cgImage

- (CGImageRef) m_cgImage

protected

Definition at line 50 of file qnsview.h.

Referenced by init.

m_widget

- (QWidget*) m_widget

protected

Definition at line 51 of file qnsview.h.

Referenced by init, and initWithWidget:.

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The documentation for this class was generated from the following files:

• /src/plugins/platforms/cocoa/qnsview.h
• /src/plugins/platforms/cocoa/qnsview.mm