public ImageFormControl(String imageFileToOpen)
{
FileName = imageFileToOpen;
thread = null;
fileManager = new FileManager();
ImageState = new ImageState();
}
public ImageState CalculateZoomedAndRotatedImageState(ImageState imageState)
{
ImageState zoomedImageState = new ImageState();
zoomedImageState.X = (int)(imageState.X * imageState.Zoom);
zoomedImageState.Y = (int)(imageState.Y * imageState.Zoom);
zoomedImageState.ScreenHeight = imageState.ScreenHeight;
zoomedImageState.ScreenWidth = imageState.ScreenWidth;
float angle = imageState.Angle;
while (angle > 360) angle = angle - 360;
while (angle < 0) angle = angle + 360;
if (angle == 90 || angle == 270)
{
zoomedImageState.Height = (int)(imageState.Width * imageState.Zoom);
zoomedImageState.Width = (int)(imageState.Height * imageState.Zoom);
}
else
{
zoomedImageState.Height = (int)(imageState.Height * imageState.Zoom);
zoomedImageState.Width = (int)(imageState.Width * imageState.Zoom);
}
//zoomedImageState.Top = (int)(imageState.Top * imageState.Zoom);
//zoomedImageState.Right = (int)(imageState.Right * imageState.Zoom);
//zoomedImageState.Left = (int)(imageState.Left * imageState.Zoom);
//zoomedImageState.Bottom = (int)(imageState.Right * imageState.Zoom);
zoomedImageState.Zoom = 1;
return zoomedImageState;
}
public ImageState AdjustPositionAndScale(int left, int top, int right, int bottom, float otherImageScaleH, float otherImageScaleW, int angle=0)
{
ImageState imageState = new ImageState();
imageState = adjustAngle(angle, imageState);
left = (int)(left / otherImageScaleW);
right = (int)(right / otherImageScaleW);
top = (int)(top / otherImageScaleH);
bottom = (int)(bottom / otherImageScaleH);
int width = right - left;
int height = bottom - top;
float scaleh = (float)BoxSize.Height / height;
float scalew = (float)BoxSize.Width / width;
float minScale = Math.Min(scaleh, scalew);
Point center = Center;
imageState.Zoom = minScale;
imageState.X = -left;
imageState.Y = -top;
int scaledWidth = (int)(width * minScale);
int scaledHeight = (int)(height * minScale);
int imageWidth = (int)(imageState.Zoom * ImageSize.Width);
imageState = adjustCenter(minScale, scaledWidth, scaledHeight, imageState);
return imageState;
}
public void sendImageStateUpdateForListeners(ImageState imageState)
{
if (this.UpdateImage != null)
{
this.UpdateImage.BeginInvoke(imageState, null, null);
}
}
public ImageState(ImageState otherState)
{
this.Active = otherState.Active;
this.Angle = otherState.Angle;
this.Bottom = otherState.Bottom;
this.Height = otherState.Height;
this.Left = otherState.Left;
this.Right = otherState.Right;
this.ScreenHeight = otherState.ScreenHeight;
this.ScreenWidth = otherState.ScreenWidth;
this.Top = otherState.Top;
this.Width = otherState.Width;
this.X = otherState.X;
this.Y = otherState.Y;
this.Zoom = otherState.Zoom;
}
public void UpdateImageState(ImageState imageState)
{
ImageState.Angle = imageState.Angle;
ImageState.Bottom = imageState.Bottom;
ImageState.ScreenHeight = imageState.ScreenHeight;
ImageState.Left = imageState.Left;
ImageState.Right = imageState.Right;
ImageState.Top = imageState.Top;
ImageState.ScreenWidth = imageState.ScreenWidth;
ImageState.X = imageState.X;
ImageState.Y = imageState.Y;
ImageState.Zoom = imageState.Zoom;
ImageState.Active = imageState.Active;
if (ImageUpdate != null)
{
ImageUpdate.BeginInvoke(ImageState, null, null);
}
}
private ImageState adjustCenter(float minScale, int scaledWidth, int scaledHeight, ImageState imageState)
{
int pictureWidth = BoxSize.Width;
int pictureHeight = BoxSize.Height;
float extrawidth = 0;
float extraheight = 0;
if (pictureWidth > scaledWidth)
{
extrawidth = (pictureWidth - scaledWidth) / 2;
extrawidth = (extrawidth > 0) ? extrawidth / minScale : 0;
if (extrawidth > 0) imageState.X += (int)extrawidth;
}
if (pictureHeight > scaledHeight)
{
extraheight = (pictureHeight - scaledHeight) / 2;
extraheight = (extraheight > 0) ? extraheight / minScale : 0;
if (extraheight > 0) imageState.Y += (int)extraheight;
}
return imageState;
}
public ImageZoomMainForm(String imagePath)
{
InitializeComponent();
this.WindowState = FormWindowState.Maximized;
imageState = new ImageState();
imageState.Zoom = 1f;
imageState.X = 0;
imageState.Y = 0;
imageState.Angle = 0;
string imagefilename = imagePath;
loadImage(imagefilename);
imageState.Width = img.Width;
imageState.Height = img.Height;
pictureBox.Paint += new PaintEventHandler(imageBox_Paint);
this.Show();
this.WindowState = FormWindowState.Maximized;
this.Activate();
imageUtils = new ImageUtils();
imageUtils.Center = getCenterPoint();
imageUtils.BoxSize = pictureBox.Size;
imageUtils.ImageSize = img.Size;
Graphics g = this.CreateGraphics();
setViewMinimumBounds(0,0,img.Width, img.Height, img.Height, img.Width, 0);
interceptor = new InterceptKeyboard();
InterceptKeyboard.SetHook(interceptor.hook);
interceptor.KeyEvent += keyDown;
zoomLabel.Text = "zoom is: " + imageState.Zoom;
}
public void imageShouldBeShownAllIfFitsAndNoShift()
{
ImageUtils target = new ImageUtils();
int left = 0;
int top = 0;
int right = 100;
int bottom = 100;
float otherImageScaleH = 1;
float otherImageScaleW = 1;
ImageState actual;
ImageState expected = new ImageState();
expected.X = 0;
expected.Y = 0;
expected.Zoom = 1f;
target.ImageSize = new Size(100,100);
target.BoxSize = new Size(100, 100);
actual = target.AdjustPositionAndScale(left, top, right, bottom, otherImageScaleH, otherImageScaleW);
Assert.AreEqual(expected.X, actual.X);
Assert.AreEqual(expected.Y, actual.Y);
Assert.AreEqual(expected.Zoom, actual.Zoom);
Assert.AreEqual(expected.Angle, actual.Angle);
}
public void imageShouldBeZommedIfDesiredPartCanBeShownBigger()
{
ImageUtils target = new ImageUtils();
int left = 50;
int top = 50;
int right = 75;
int bottom = 75;
float otherImageScaleH = 1;
float otherImageScaleW = 1;
ImageState actual;
ImageState expected = new ImageState();
expected.X = -left;
expected.Y = -top;
expected.Zoom = 4f;
target.ImageSize = new Size(100, 100);
target.BoxSize = new Size(100, 100);
actual = target.AdjustPositionAndScale(left, top, right, bottom, otherImageScaleH, otherImageScaleW);
Assert.AreEqual(expected.X, actual.X);
Assert.AreEqual(expected.Y, actual.Y);
Assert.AreEqual(expected.Zoom, actual.Zoom);
Assert.AreEqual(expected.Angle, actual.Angle);
}
public void setViewMinimumBounds(int left, int top, int right, int bottom, int otherImageHeight, int otherImageWidth, int rotation)
{
Output.Debug("SetView", left + ":" + top + ":" + right + ":" + bottom);
Size otherImageSize = new Size(otherImageWidth, otherImageHeight);
imageState = imageUtils.adjustAngle(rotation, imageState);
float[] dimensionMultiplier = imageUtils.MultipliersToSameSize(GetImageSize(), otherImageSize, imageState.Angle);
imageState = imageUtils.AdjustPositionAndScale(left, top, right, bottom, dimensionMultiplier[0], dimensionMultiplier[1], rotation);
pictureBox.Refresh();
}
public ImageState GetImageState()
{
Size originalImageSize = GetImageSize();
Size imageSize = originalImageSize;
ImageState imageState = new ImageState(this.imageState);
//if image is rotated its dimensions are inverted
if (imageState.Angle == 90 || imageState.Angle == 270)
{
imageSize.Height = originalImageSize.Width;
imageSize.Width = originalImageSize.Height;
}
RectangleF displayArea = pictureBox.CreateGraphics().VisibleClipBounds;
int zoomedHeight = (int)(imageSize.Height * imageState.Zoom);
int zoomedWidth = (int)(imageSize.Width * imageState.Zoom);
int zoomedX = (int)(imageState.X * imageState.Zoom);
int zoomedY = (int)(imageState.Y * imageState.Zoom);
imageState.Left = (zoomedX >= 0) ? 0 : (int)-imageState.X;
imageState.Right = (displayArea.Width >= zoomedWidth + zoomedX) ? imageSize.Width : (int)((displayArea.Width - zoomedX)/imageState.Zoom);
imageState.Top = (zoomedY >= 0) ? 0 : (int)-imageState.Y;
imageState.Bottom = (displayArea.Height >= zoomedHeight + zoomedY) ? imageSize.Height : (int)((displayArea.Height - zoomedY)/imageState.Zoom);
imageState.ScreenHeight = (int)displayArea.Height;
imageState.ScreenWidth = (int)displayArea.Width;
this.imageState = new ImageState(imageState);
this.imageState.Width = originalImageSize.Width;
this.imageState.Height = originalImageSize.Height;
return imageState;
}
public void ProcessCommand(String command, float value)
{
Size imageSize = GetImageSize();
imageState.Width = imageSize.Width;
imageState.Height = imageSize.Height;
imageState.ScreenHeight = pictureBox.Height;
imageState.ScreenWidth = pictureBox.Width;
switch (command)
{
case ServiceCommands.IMAGE_MOVE_X:
addToX((int)(pictureBox.Width * value / imageState.Zoom));
break;
case ServiceCommands.IMAGE_MOVE_Y:
addToY((int)(pictureBox.Height * value / imageState.Zoom));
break;
case ServiceCommands.IMAGE_ZOOM:
zoomPicture(value, new Point(pictureBox.Width/2, pictureBox.Height/2));
break;
case ServiceCommands.IMAGE_ROTATE:
imageState.Angle += (int)value;
break;
case ServiceCommands.CLOSE_IMAGE:
ImageState closedState = new ImageState();
closedState.Active = false;
sendImageStateUpdateForListeners(closedState);
return;
}
ImageState zoomedImageState = calcHelper.CalculateZoomedAndRotatedImageState(imageState);
keepInsideBounds(zoomedImageState);
sendImageStateUpdateForListeners(GetImageState());
Invoke((MethodInvoker)delegate
{
pictureBox.Refresh();
});
}
public void keepInsideBounds(ImageState zoomedImageState)
{
Graphics graphics = pictureBox.CreateGraphics();
if (zoomedImageState.Height > pictureBox.Height)
{
if (zoomedImageState.Height + zoomedImageState.Y < graphics.VisibleClipBounds.Height)
{
imageState.Y = (int)((graphics.VisibleClipBounds.Height - zoomedImageState.Height) / imageState.Zoom);
}
if (imageState.Y > 0)
{
imageState.Y = 0;
}
}
else
{
//If height is less than screen width, keep centralized
int excess = (int)((imageState.ScreenHeight - zoomedImageState.Height) / imageState.Zoom);
imageState.Y = (int)(excess / 2);
}
if (zoomedImageState.Width > pictureBox.Width)
{
if (zoomedImageState.Width + zoomedImageState.X < graphics.VisibleClipBounds.Width)
{
imageState.X = (int)((graphics.VisibleClipBounds.Width - zoomedImageState.Width) / imageState.Zoom);
}
if (imageState.X > 0)
{
imageState.X = 0;
}
}
else
{
//If width is less than screen width, keep centralized
int excess = (int)((imageState.ScreenWidth - zoomedImageState.Width) / imageState.Zoom);
imageState.X = (int)(excess / 2);
}
}
private void ImageUpdated(ImageState imageState)
{
if (!imageState.Active)
{
this.CloseCurrentImage();
}
WarnImagePresentationListeners();
}
public void imageShouldBeShiftedToBottomAsRequestedAndCantFitAllWhenRotated90()
{
ImageUtils target = new ImageUtils();
int left = 0;
int top = 100;
int right = 100;
int bottom = 200;
float otherImageScaleH = 1;
float otherImageScaleW = 1;
ImageState actual;
ImageState expected = new ImageState();
expected.X = 0;
expected.Y = -top;
expected.Zoom = 1f;
expected.Angle = 90;
target.ImageSize = new Size(100, 1000);
target.BoxSize = new Size(100, 100);
actual = target.AdjustPositionAndScale(left, top, right, bottom, otherImageScaleH, otherImageScaleW, 90);
Assert.AreEqual(expected.X, actual.X);
Assert.AreEqual(expected.Y, actual.Y);
Assert.AreEqual(expected.Zoom, actual.Zoom);
Assert.AreEqual(expected.Angle, actual.Angle);
}
public void imageShouldBeShiftedToTwiceBottomWhenScaledRightIsDoubled()
{
ImageUtils target = new ImageUtils();
int left = 0;
int top = 100;
int right = 200;
int bottom = 300;
float otherImageScaleH = 2f;
float otherImageScaleW = 2f;
ImageState actual;
ImageState expected = new ImageState();
expected.X = 0;
expected.Y = -50;
expected.Zoom = 1f;
expected.Angle = 0;
target.ImageSize = new Size(100, 200);
target.BoxSize = new Size(100, 100);
actual = target.AdjustPositionAndScale(left, top, right, bottom, otherImageScaleH, otherImageScaleW);
Assert.AreEqual(expected.X, actual.X);
Assert.AreEqual(expected.Y, actual.Y);
Assert.AreEqual(expected.Zoom, actual.Zoom);
Assert.AreEqual(expected.Angle, actual.Angle);
}
public void imageShouldBeShiftedRightSameWayWhenIsRotated180()
{
ImageUtils target = new ImageUtils();
int left = 100;
int top = 0;
int right = 200;
int bottom = 100;
float otherImageScaleH = 1;
float otherImageScaleW = 1;
ImageState actual;
ImageState expected = new ImageState();
expected.X = -left;
expected.Y = 0;
expected.Zoom = 1f;
expected.Angle = 180;
target.ImageSize = new Size(1000, 100);
target.BoxSize = new Size(100, 100);
actual = target.AdjustPositionAndScale(left, top, right, bottom, otherImageScaleH, otherImageScaleW, 180);
Assert.AreEqual(expected.X, actual.X);
Assert.AreEqual(expected.Y, actual.Y);
Assert.AreEqual(expected.Zoom, actual.Zoom);
Assert.AreEqual(expected.Angle, actual.Angle);
}
public void imageShouldBeZommedWithSamePositioningWhenRotated90AndIsNotSquared()
{
ImageUtils target = new ImageUtils();
int left = 50;
int top = 50;
int right = 75;
int bottom = 75;
float otherImageScaleH = 1;
float otherImageScaleW = 1;
ImageState actual;
ImageState expected = new ImageState();
expected.X = -left;
expected.Y = -top;
expected.Zoom = 4f;
expected.Angle = 90;
target.ImageSize = new Size(200, 100);
target.BoxSize = new Size(100, 100);
actual = target.AdjustPositionAndScale(left, top, right, bottom, otherImageScaleH, otherImageScaleW, 90);
Assert.AreEqual(expected.X, actual.X);
Assert.AreEqual(expected.Y, actual.Y);
Assert.AreEqual(expected.Zoom, actual.Zoom);
Assert.AreEqual(expected.Angle, actual.Angle);
}
public ImageState adjustAngle(int rotation, ImageState imageState)
{
while (rotation < 0) rotation += 360;
while (rotation > 360) rotation -= 360;
if (rotation == 0)
{
imageState.Angle = 0;
}
else if (Math.Abs(rotation) == 180)
{
imageState.Angle = 180;
}
else if (Math.Abs(rotation) == 90 || Math.Abs(rotation) == 270)
{
imageState.Angle = rotation;
}
return imageState;
}
