mirror of
https://github.com/amyinspace/MagicSetEditor2.git
synced 2026-06-10 04:57:00 -04:00
Twan van Laarhoven
222 lines
9.3 KiB
C++
222 lines
9.3 KiB
C++
//+----------------------------------------------------------------------------+
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//| Description: Magic Set Editor - Program to make Magic (tm) cards |
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//| Copyright: (C) 2001 - 2017 Twan van Laarhoven and Sean Hunt |
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//| License: GNU General Public License 2 or later (see file COPYING) |
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//+----------------------------------------------------------------------------+
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#ifndef HEADER_UTIL_ROTATION
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#define HEADER_UTIL_ROTATION
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// ----------------------------------------------------------------------------- : Includes
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#include <util/prec.hpp>
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#include <util/real_point.hpp>
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#include <gfx/gfx.hpp>
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class Font;
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// ----------------------------------------------------------------------------- : Rotation
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enum RotationFlags
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{ ROTATION_NORMAL
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, ROTATION_ATTACH_TOP_LEFT
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};
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/// An object that can rotate coordinates inside a specified rectangle
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/** This class has lots of tr*** functions, they convert
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* internal coordinates to external/screen coordinates.
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* tr***inv do the opposite.
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*/
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class Rotation {
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public:
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/// Construct a rotation object
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/** with the given rectangle of external coordinates and a given rotation angle and zoom factor.
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* if is_internal then the rect gives the internal coordinates, its origin should be (0,0)
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*/
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Rotation(Radians angle = 0, const RealRect& rect = RealRect(0,0,0,0), double zoom = 1.0, double strectch = 1.0, RotationFlags flags = ROTATION_NORMAL);
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/// Change the zoom factor
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inline void setZoom(double z) { zoomX = zoomY = z; }
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/// Retrieve the zoom factor
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inline double getZoom() const { return zoomY; }
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/// Change the stretch factor
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void setStretch(double s);
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/// Stretch factor
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inline double getStretch() const { return zoomX / zoomY; }
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/// Get the angle
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inline Radians getAngle() const { return angle; }
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/// Change the origin
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inline void setOrigin(const RealPoint& o) { origin = o; }
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/// The internal size
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inline RealSize getInternalSize() const { return size; }
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inline double getWidth() const { return size.width; }
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inline double getHeight() const { return size.height; }
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/// The intarnal rectangle (origin at (0,0))
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inline RealRect getInternalRect() const { return RealRect(RealPoint(0,0), size); }
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/// The size of the external rectangle (as passed to the constructor) == trNoNeg(getInternalSize())
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inline RealSize getExternalSize() const { return trSizeToBB(size); }
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/// The external rectangle (as passed to the constructor) == trNoNeg(getInternalRect())
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inline RealRect getExternalRect() const { return trRectToBB(getInternalRect()); }
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/// Translate a size or length
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inline double trS(double s) const { return s * zoomY; }
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inline double trX(double s) const { return s * zoomX; }
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inline double trY(double s) const { return s * zoomY; }
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inline RealSize trS(const RealSize& s) const { return RealSize(s.width * zoomX, s.height * zoomY); }
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/// Translate an angle
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inline Radians trAngle(Radians a) { return constrain_radians(angle + a); }
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/// Translate a single point
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RealPoint tr(const RealPoint& p) const;
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/// Translate a single point, but don't zoom
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RealPoint trNoZoom(const RealPoint& p) const;
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/// Translate a 'pixel'. A pixel has size 1*1
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RealPoint trPixel(const RealPoint& p) const;
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/// Translate a 'pixel', but don't zoom
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RealPoint trPixelNoZoom(const RealPoint& p) const;
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/// Translate a single size
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RealSize trSize(const RealSize& s) const;
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/// Translate a single size, returns the bounding box size (non-negative)
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RealSize trSizeToBB(const RealSize& s) const;
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/// Translate a rectangle, returns the bounding box, the size will be non-negative
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RealRect trRectToBB(const RealRect& r) const;
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/// Translate a rectangle into a region (supports rotation)
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wxRegion trRectToRegion(const RealRect& rect) const;
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/// Translate a size or length back to internal 'coordinates'
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inline double trInvS(double s) const { return s / zoomY; }
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inline double trInvX(double s) const { return s / zoomX; }
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inline double trInvY(double s) const { return s / zoomY; }
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/// Translate a size back to internal 'coordinates', doesn't rotate
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inline RealSize trInvS(const RealSize& s) const { return RealSize(s.width / zoomX, s.height / zoomY); }
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/// Translate a point back to internal coordinates
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RealPoint trInv(const RealPoint& p) const;
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/// Translate a size back to internal coordinates
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RealSize trInv(const RealSize& p) const;
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protected:
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Radians angle; ///< The angle of rotation in radians (counterclockwise)
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RealSize size; ///< Size of the rectangle, in internal coordinates
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RealPoint origin; ///< tr(0,0)
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double zoomX; ///< Zoom factor, zoom = 2.0 means that 1 internal = 2 external
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double zoomY;
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friend class Rotater;
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/// Determine the top-left corner of the bounding box around the rotated box s (in external coordinates)
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RealPoint boundingBoxCorner(const RealSize& s) const;
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};
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// ----------------------------------------------------------------------------- : Rotater
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/// An object that changes a rotation RIIA style
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/** Usage:
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* @code
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* Rotation a, b;
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* Rotater(a,b);
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* a.tr(x) // now acts as a.tr(b.tr(x))
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* @endcode
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*/
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class Rotater {
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public:
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/// Compose a rotation by onto the rotation rot
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/** rot is restored when this object is destructed
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*/
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Rotater(Rotation& rot, const Rotation& by);
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~Rotater();
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private:
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Rotation old;
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Rotation& rot;
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};
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// ----------------------------------------------------------------------------- : RotatedDC
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/// Render quality of text
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enum RenderQuality {
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QUALITY_LOW, ///< Normal
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QUALITY_SUB_PIXEL, ///< Sub-pixel positioning
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QUALITY_AA, ///< Our own anti aliassing
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};
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#if wxVERSION_NUMBER < 2900
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// argument type to SetLogicalFunction
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typedef int wxRasterOperationMode;
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#endif
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/// A DC with rotation applied
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/** All draw** functions take internal coordinates.
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*/
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class RotatedDC : public Rotation {
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public:
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RotatedDC(DC& dc, Radians angle, const RealRect& rect, double zoom, RenderQuality quality, RotationFlags flags = ROTATION_NORMAL);
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RotatedDC(DC& dc, const Rotation& rotation, RenderQuality quality);
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// --------------------------------------------------- : Drawing
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/// Draw text
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void DrawText (const String& text, const RealPoint& pos, int blur_radius = 0, int boldness = 1, double stretch = 1.0);
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void DrawText (const String& text, const RealPoint& pos, Color color, int blur_radius = 0, int boldness = 1, double stretch = 1.0);
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/// Draw text with the shadow and color settings of the given font
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void DrawTextWithShadow(const String& text, const Font& font, const RealPoint& pos, double scale = 1.0, double stretch = 1.0);
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/// Draw abitmap, it must already be zoomed!
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void DrawBitmap(const Bitmap& bitmap, const RealPoint& pos);
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/// Draw an image using the given combining mode, the image must already be zoomed!
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void DrawImage (const Image& image, const RealPoint& pos, ImageCombine combine = COMBINE_DEFAULT);
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/// Draw a bitmap that is already zoomed and rotated.
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/** The rectangle the position in internal coordinates, and the size before rotating and zooming */
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void DrawPreRotatedBitmap(const Bitmap& bitmap, const RealRect& rect);
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/// Draw an image that is already zoomed and rotated
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void DrawPreRotatedImage(const Image& image, const RealRect& rect, ImageCombine combine = COMBINE_DEFAULT);
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void DrawLine (const RealPoint& p1, const RealPoint& p2);
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void DrawRectangle(const RealRect& r);
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void DrawRoundedRectangle(const RealRect& r, double radius);
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void DrawCircle(const RealPoint& center, double radius);
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void DrawEllipse(const RealPoint& center, const RealSize& size);
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/// Draw an arc of an ellipse, angles are in radians
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void DrawEllipticArc(const RealPoint& center, const RealSize& size, Radians start, Radians end);
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/// Draw spokes of an ellipse
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void DrawEllipticSpoke(const RealPoint& center, const RealSize& size, Radians start);
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// Fill the dc with the color of the current brush
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void Fill();
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// --------------------------------------------------- : Properties
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/// Sets the pen for the dc, does not scale the line width
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void SetPen(const wxPen&);
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void SetBrush(const wxBrush&);
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void SetTextForeground(const Color&);
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void SetLogicalFunction(wxRasterOperationMode function);
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void SetFont(const wxFont& font);
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/// Set the font, scales for zoom and high_quality
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/** The font size will be multiplied by 'scale' */
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void SetFont(const Font& font, double scale);
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/// Steps to use when decrementing font size
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double getFontSizeStep() const;
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RealSize GetTextExtent(const String& text) const;
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double GetCharHeight() const;
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void SetClippingRegion(const RealRect& rect);
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void DestroyClippingRegion();
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// --------------------------------------------------- : Other
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/// Get the current contents of the given ractangle, for later restoring
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Bitmap GetBackground(const RealRect& r);
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inline wxDC& getDC() { return dc; }
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private:
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wxDC& dc; ///< The actual dc
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RenderQuality quality; ///< Quality of the text
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};
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// ----------------------------------------------------------------------------- : EOF
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#endif
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