public void DrawStringWithWrapping(double x, double y, string str, double max_width)
{
int w, h, spacing;
Cairo.Matrix old = Matrix;
if (max_width < 0)
{
throw new ArgumentOutOfRangeException("Invalid maximum width value");
}
MoveTo(x, y);
UpdateFontSize();
Matrix = new Cairo.Matrix();
spacing = layout.Spacing;
layout.Width = (int)(max_width * old.Xx * Pango.Scale.PangoScale);
layout.Spacing = (int)(FontLineSpace * (old.Yy * Pango.Scale.PangoScale));
layout.SingleParagraphMode = false;
SetText(str);
Pango.CairoHelper.ShowLayout(this, layout);
layout.GetPixelSize(out w, out h);
layout.Spacing = spacing;
Matrix = old;
}
public void MeasureString(string str, double max_width, bool wrapping, out double width, out double height)
{
int w, h, spacing;
Cairo.Matrix old = Matrix;
if (max_width < 0 || max_width > 1)
{
throw new ArgumentOutOfRangeException("Invalid maximum width value");
}
UpdateFontSize();
Matrix = new Cairo.Matrix();
spacing = layout.Spacing;
layout.Width = (int)(max_width * old.Xx * Pango.Scale.PangoScale);
layout.Spacing = (int)(FontLineSpace * (old.Xx * Pango.Scale.PangoScale));
layout.SingleParagraphMode = !wrapping;
SetText(str);
layout.GetPixelSize(out w, out h);
Matrix = old;
layout.Spacing = spacing;
height = h / old.Yy;
width = w / old.Xx;
}
/// <summary>
/// Creates a new GdiRenderObject instance.
/// </summary>
/// <param name="text">The text to draw.</param>
/// <param name="font">The font to use to render the text.</param>
/// <param name="bounds">The location and size to draw the text.</param>
/// <param name="fill">
/// The brush used to fill the path when the state is <see cref="RenderState.Normal"/>.
/// </param>
/// <param name="highlightFill">
/// The brush used to fill the path when the state is <see cref="RenderState.Highlighted"/>.
/// </param>
/// <param name="selectFill">
/// The brush used to fill the path when the state is <see cref="RenderState.Selected"/>.
/// </param>
/// <param name="outline">
/// The pen used to outline the path when the state is <see cref="RenderState.Normal"/>.
/// </param>
/// <param name="highlightOutline">
/// The pen used to outline the path when the state is <see cref="RenderState.Highlighted"/>.
/// </param>
/// <param name="selectOutline">
/// The pen used to outline the path when the state is <see cref="RenderState.Selected"/>.
/// </param>
public CairoRenderObject(String text, FontFace font, Rectangle bounds,
StyleBrush fill, StyleBrush highlightFill, StyleBrush selectFill,
StylePen outline, StylePen highlightOutline, StylePen selectOutline)
{
_state = RenderState.Normal;
Path = null;
Image = null;
Bounds = new Rectangle();
AffineTransform = null;
ColorTransform = null;
Text = text;
Font = font;
Bounds = bounds;
Fill = fill;
HighlightFill = highlightFill;
SelectFill = selectFill;
Outline = outline;
HighlightOutline = highlightOutline;
SelectOutline = selectOutline;
Line = null;
HighlightLine = null;
SelectLine = null;
}
public Cairo.Status Copy (out Cairo.Matrix other)
{
IntPtr p = IntPtr.Zero;
Cairo.Status status = CairoAPI.cairo_matrix_copy (matrix, out p);
other = new Cairo.Matrix (p);
return status;
}
// Shows a text from the current position. No Width defined then no RTL positioning
public void ShowPangoText(string str)
{
Cairo.Matrix old = Matrix;
UpdateFontSize();
Matrix = new Cairo.Matrix();
SetText(str);
layout.SingleParagraphMode = true;
layout.Width = -1;
Pango.CairoHelper.ShowLayout(this, layout);
Matrix = old;
}
public void DeviceToUser(ref double x, ref double y)
{
Cairo.Matrix inv = (Cairo.Matrix) this.transformMatrix.Clone();
Cairo.Status cs = inv.Invert();
if (cs == Cairo.Status.Success)
{
inv.TransformPoint(ref x, ref y);
}
else
{
throw new Exception("Unable to transform device coordinates to user coordinates because the matrix was uninvertible (" + cs.ToString() + ").");
}
}
// From a giving point centers the text into it
public void DrawTextCentered(double x, double y, string str)
{
int w, h;
Cairo.Matrix old = Matrix;
UpdateFontSize();
Matrix = new Cairo.Matrix();
SetText(str);
layout.SingleParagraphMode = true;
layout.Width = -1;
layout.GetPixelSize(out w, out h);
MoveTo((old.X0 + x * old.Xx) - w / 2d, old.Y0 + (y * old.Yy) - h / 2d);
Pango.CairoHelper.ShowLayout(this, layout);
Matrix = old;
}
/// <summary>
/// Creates a new GdiRenderObject instance.
/// </summary>
/// <param name="image">The symbol to draw.</param>
/// <param name="imageBounds">The location and size to draw the symbol.</param>
/// <param name="transform">The affine transform applied to the symbol before drawing.</param>
/// <param name="colorTransform">The color transform applied to the symbol before drawing.</param>
public CairoRenderObject(Surface image, Rectangle imageBounds, CairoMatrix transform, CairoMatrix colorTransform)
{
_state = RenderState.Normal;
Image = image;
Bounds = imageBounds;
AffineTransform = transform;
ColorTransform = colorTransform;
Path = null;
Fill = null;
HighlightFill = null;
SelectFill = null;
Line = null;
HighlightLine = null;
SelectLine = null;
Outline = null;
HighlightOutline = null;
SelectOutline = null;
Text = null;
Font = null;
}
// Shows a text from the current position. Defines all the line as text drawing box
public void ShowPangoText(string str, bool bold, double width, double rotation)
{
Pango.Alignment align = layout.Alignment;
if (bold)
{
layout.FontDescription.Weight = Pango.Weight.Bold;
}
if (width == -1) // Calculates maximum width in the user space
{
layout.Width = (int)(((1 - width_margin) * Matrix.Xx - (CurrentPoint.X * Matrix.Xx)) * Pango.Scale.PangoScale);
}
else
{
layout.Width = (int)(width * Matrix.Xx * Pango.Scale.PangoScale);
}
if (rotation != 0)
{
Cairo.Matrix old = Matrix;
UpdateFontSize();
Matrix = new Cairo.Matrix();
Rotate(rotation);
SetText(str);
layout.SingleParagraphMode = true;
Pango.CairoHelper.ShowLayout(this, layout);
Matrix = old;
}
else
{
ShowPangoText(str);
}
layout.FontDescription.Weight = Pango.Weight.Normal;
layout.Alignment = align;
}
/// <summary>
/// Creates a new CairoRenderObject instance.
/// </summary>
/// <param name="path">The path to draw.</param>
/// <param name="fill">
/// The brush used to fill the path when the state is <see cref="RenderState.Normal"/>.
/// </param>
/// <param name="highlightFill">
/// The brush used to fill the path when the state is <see cref="RenderState.Highlighted"/>.
/// </param>
/// <param name="selectFill">
/// The brush used to fill the path when the state is <see cref="RenderState.Selected"/>.
/// </param>
/// <param name="line">
/// The pen used to draw a line when the state is <see cref="RenderState.Normal"/>.
/// </param>
/// <param name="highlightLine">
/// The pen used to draw a line when the state is <see cref="RenderState.Highlighted"/>.
/// </param>
/// <param name="selectLine">
/// The pen used to draw a line when the state is <see cref="RenderState.Selected"/>.
/// </param>
/// <param name="outline">
/// The pen used to outline the path when the state is <see cref="RenderState.Normal"/>.
/// </param>
/// <param name="highlightOutline">
/// The pen used to outline the path when the state is <see cref="RenderState.Highlighted"/>.
/// </param>
/// <param name="selectOutline">
/// The pen used to outline the path when the state is <see cref="RenderState.Selected"/>.
/// </param>
public CairoRenderObject(Path2D path, StyleBrush fill, StyleBrush highlightFill, StyleBrush selectFill,
StylePen line, StylePen highlightLine, StylePen selectLine,
StylePen outline, StylePen highlightOutline, StylePen selectOutline)
{
_state = RenderState.Normal;
Path = path;
Fill = fill;
HighlightFill = highlightFill;
SelectFill = selectFill;
Line = line;
HighlightLine = highlightLine;
SelectLine = selectLine;
Outline = outline;
HighlightOutline = highlightOutline;
SelectOutline = selectOutline;
Image = null;
Bounds = new Rectangle();
AffineTransform = new CairoMatrix();
ColorTransform = null;
Text = null;
Font = null;
}
public ZoomableCairoArea()
{
this.mousePressedX = -1;
this.mousePressedY = -1;
this.currentMouseX = -1;
this.currentMouseY = -1;
this.lastMouseX = -1;
this.lastMouseY = -1;
this.mousePressedUserX = -1;
this.mousePressedUserY = -1;
this.firstPressedButton = 0;
this.scrollUnits = 0.1;
this.maxScale = 1.0;
this.minScale = 0.1;
this.transformMatrix = new Matrix();
this.background = new Cairo.Color(0.3, 0.3, 0.3, 1.0);
this.mouseInWidget = false;
this.pressedButtons = new bool[] { false, false, false };
this.isScaling = false;
this.isTranslating = false;
this.isScrollWheelScaling = false;
this.drawZoomScale = true;
this.Events = this.Events |
Gdk.EventMask.ButtonPressMask |
Gdk.EventMask.ButtonReleaseMask |
Gdk.EventMask.PointerMotionMask |
Gdk.EventMask.EnterNotifyMask |
Gdk.EventMask.LeaveNotifyMask |
Gdk.EventMask.ScrollMask;
this.CanFocus = true;
}
// Shows a text from the current position. No Width defined then no RTL positioning
public void ShowPangoText(string str)
{
Cairo.Matrix old = Matrix;
UpdateFontSize ();
Matrix = new Cairo.Matrix ();
SetText (str);
layout.SingleParagraphMode = true;
layout.Width = -1;
Pango.CairoHelper.ShowLayout (this, layout);
Matrix = old;
}
// Shows a text from the current position. Defines all the line as text drawing box
public void ShowPangoText(string str, bool bold, double width, double rotation)
{
Pango.Alignment align = layout.Alignment;
if (bold) {
layout.FontDescription.Weight = Pango.Weight.Bold;
}
if (width == -1) { // Calculates maximum width in the user space
layout.Width = (int) (((1 - width_margin) * Matrix.Xx - (CurrentPoint.X * Matrix.Xx)) * Pango.Scale.PangoScale);
} else
layout.Width = (int) (width * Matrix.Xx * Pango.Scale.PangoScale);
if (rotation != 0) {
Cairo.Matrix old = Matrix;
UpdateFontSize ();
Matrix = new Cairo.Matrix ();
Rotate (rotation);
SetText (str);
layout.SingleParagraphMode = true;
Pango.CairoHelper.ShowLayout (this, layout);
Matrix = old;
}
else
ShowPangoText (str);
layout.FontDescription.Weight = Pango.Weight.Normal;
layout.Alignment = align;
}
// From a giving point centers the text into it
public void DrawTextCentered(double x, double y, string str)
{
int w, h;
Cairo.Matrix old = Matrix;
UpdateFontSize ();
Matrix = new Cairo.Matrix ();
SetText (str);
layout.SingleParagraphMode = true;
layout.Width = -1;
layout.GetPixelSize (out w, out h);
MoveTo ((old.X0 + x * old.Xx) - w / 2d, old.Y0 + (y * old.Yy) - h / 2d);
Pango.CairoHelper.ShowLayout (this, layout);
Matrix = old;
}
public void MeasureString(string str, double max_width, bool wrapping, out double width, out double height)
{
int w, h, spacing;
Cairo.Matrix old = Matrix;
if (max_width < 0 || max_width > 1)
throw new ArgumentOutOfRangeException ("Invalid maximum width value");
UpdateFontSize ();
Matrix = new Cairo.Matrix ();
spacing = layout.Spacing;
layout.Width = (int) (max_width * old.Xx * Pango.Scale.PangoScale);
layout.Spacing = (int) (FontLineSpace * (old.Xx * Pango.Scale.PangoScale));
layout.SingleParagraphMode = !wrapping;
SetText (str);
layout.GetPixelSize (out w, out h);
Matrix = old;
layout.Spacing = spacing;
height = h / old.Yy;
width = w / old.Xx;
}
public void DrawStringWithWrapping(double x, double y, string str, double max_width)
{
int w, h, spacing;
Cairo.Matrix old = Matrix;
if (max_width < 0)
throw new ArgumentOutOfRangeException ("Invalid maximum width value");
MoveTo (x, y);
UpdateFontSize ();
Matrix = new Cairo.Matrix ();
spacing = layout.Spacing;
layout.Width = (int) (max_width * old.Xx * Pango.Scale.PangoScale);
layout.Spacing = (int) (FontLineSpace * (old.Yy * Pango.Scale.PangoScale));
layout.SingleParagraphMode = false;
SetText (str);
Pango.CairoHelper.ShowLayout (this, layout);
layout.GetPixelSize (out w, out h);
layout.Spacing = spacing;
Matrix = old;
}
/// <summary>
/// Transform this point with the given <see cref="Matrix"/>.
/// </summary>
/// <param name='m'>
/// The given transformation matrix.
/// </param>
public void Transform(Matrix m)
{
double newx = this.x * m.Xx + this.y * m.Xy + m.X0;
double newy = this.x * m.Yx + this.y * m.Yy + m.Y0;
this.x = newx;
this.y = newy;
}
/// <summary>
/// Creates a new GdiRenderObject instance.
/// </summary>
/// <param name="text">The text to draw.</param>
/// <param name="font">The font to use to render the text.</param>
/// <param name="bounds">The location and size to draw the text.</param>
/// <param name="fill">
/// The brush used to fill the path when the state is <see cref="RenderState.Normal"/>.
/// </param>
/// <param name="highlightFill">
/// The brush used to fill the path when the state is <see cref="RenderState.Highlighted"/>.
/// </param>
/// <param name="selectFill">
/// The brush used to fill the path when the state is <see cref="RenderState.Selected"/>.
/// </param>
/// <param name="outline">
/// The pen used to outline the path when the state is <see cref="RenderState.Normal"/>.
/// </param>
/// <param name="highlightOutline">
/// The pen used to outline the path when the state is <see cref="RenderState.Highlighted"/>.
/// </param>
/// <param name="selectOutline">
/// The pen used to outline the path when the state is <see cref="RenderState.Selected"/>.
/// </param>
public CairoRenderObject(String text, FontFace font, Rectangle bounds,
StyleBrush fill, StyleBrush highlightFill, StyleBrush selectFill,
StylePen outline, StylePen highlightOutline, StylePen selectOutline)
{
_state = RenderState.Normal;
Path = null;
Image = null;
Bounds = new Rectangle();
AffineTransform = null;
ColorTransform = null;
Text = text;
Font = font;
Bounds = bounds;
Fill = fill;
HighlightFill = highlightFill;
SelectFill = selectFill;
Outline = outline;
HighlightOutline = highlightOutline;
SelectOutline = selectOutline;
Line = null;
HighlightLine = null;
SelectLine = null;
}
/// <summary>
/// Creates a new GdiRenderObject instance.
/// </summary>
/// <param name="image">The symbol to draw.</param>
/// <param name="imageBounds">The location and size to draw the symbol.</param>
/// <param name="transform">The affine transform applied to the symbol before drawing.</param>
/// <param name="colorTransform">The color transform applied to the symbol before drawing.</param>
public CairoRenderObject(Surface image, Rectangle imageBounds, CairoMatrix transform, CairoMatrix colorTransform)
{
_state = RenderState.Normal;
Image = image;
Bounds = imageBounds;
AffineTransform = transform;
ColorTransform = colorTransform;
Path = null;
Fill = null;
HighlightFill = null;
SelectFill = null;
Line = null;
HighlightLine = null;
SelectLine = null;
Outline = null;
HighlightOutline = null;
SelectOutline = null;
Text = null;
Font = null;
}
public ZoomableCairoArea()
{
this.mousePressedX = -1;
this.mousePressedY = -1;
this.currentMouseX = -1;
this.currentMouseY = -1;
this.lastMouseX = -1;
this.lastMouseY = -1;
this.mousePressedUserX = -1;
this.mousePressedUserY = -1;
this.firstPressedButton = 0;
this.scrollUnits = 0.1;
this.maxScale = 1.0;
this.minScale = 0.1;
this.transformMatrix = new Matrix ();
this.background = new Cairo.Color (0.3, 0.3, 0.3, 1.0);
this.mouseInWidget = false;
this.pressedButtons = new bool[] {false, false, false};
this.isScaling = false;
this.isTranslating = false;
this.isScrollWheelScaling = false;
this.drawZoomScale = true;
this.Events = this.Events |
Gdk.EventMask.ButtonPressMask |
Gdk.EventMask.ButtonReleaseMask |
Gdk.EventMask.PointerMotionMask |
Gdk.EventMask.EnterNotifyMask |
Gdk.EventMask.LeaveNotifyMask |
Gdk.EventMask.ScrollMask;
this.CanFocus = true;
}
/// <summary>
/// Creates a new CairoRenderObject instance.
/// </summary>
/// <param name="path">The path to draw.</param>
/// <param name="fill">
/// The brush used to fill the path when the state is <see cref="RenderState.Normal"/>.
/// </param>
/// <param name="highlightFill">
/// The brush used to fill the path when the state is <see cref="RenderState.Highlighted"/>.
/// </param>
/// <param name="selectFill">
/// The brush used to fill the path when the state is <see cref="RenderState.Selected"/>.
/// </param>
/// <param name="line">
/// The pen used to draw a line when the state is <see cref="RenderState.Normal"/>.
/// </param>
/// <param name="highlightLine">
/// The pen used to draw a line when the state is <see cref="RenderState.Highlighted"/>.
/// </param>
/// <param name="selectLine">
/// The pen used to draw a line when the state is <see cref="RenderState.Selected"/>.
/// </param>
/// <param name="outline">
/// The pen used to outline the path when the state is <see cref="RenderState.Normal"/>.
/// </param>
/// <param name="highlightOutline">
/// The pen used to outline the path when the state is <see cref="RenderState.Highlighted"/>.
/// </param>
/// <param name="selectOutline">
/// The pen used to outline the path when the state is <see cref="RenderState.Selected"/>.
/// </param>
public CairoRenderObject(Path2D path, StyleBrush fill, StyleBrush highlightFill, StyleBrush selectFill,
StylePen line, StylePen highlightLine, StylePen selectLine,
StylePen outline, StylePen highlightOutline, StylePen selectOutline)
{
_state = RenderState.Normal;
Path = path;
Fill = fill;
HighlightFill = highlightFill;
SelectFill = selectFill;
Line = line;
HighlightLine = highlightLine;
SelectLine = selectLine;
Outline = outline;
HighlightOutline = highlightOutline;
SelectOutline = selectOutline;
Image = null;
Bounds = new Rectangle();
AffineTransform = new CairoMatrix();
ColorTransform = null;
Text = null;
Font = null;
}
public static Cairo.Status Multiply (
out Cairo.Matrix result, Cairo.Matrix a, Cairo.Matrix b)
{
IntPtr p = IntPtr.Zero;
Cairo.Status status = CairoAPI.cairo_matrix_multiply (
out p, a.Pointer, b.Pointer);
result = new Cairo.Matrix (p);
return status;
}
