ImageValueEditor; slice window; fixed bug in resample

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@97 0fc631ac-6414-0410-93d0-97cfa31319b6

src/gui/image_slice_window.hpp

@@ -0,0 +1,183 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+#ifndef HEADER_GUI_IMAGE_SLICE_WINDOW
+#define HEADER_GUI_IMAGE_SLICE_WINDOW
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/prec.hpp>
+
+class ImageSlicePreview;
+class ImageSliceSelector;
+class wxSpinEvent;
+
+// ----------------------------------------------------------------------------- : ImageSlice
+
+/// A slice of an image, i.e. a selected rectangle
+class ImageSlice {
+  public:
+	ImageSlice(const Image& source, const wxSize& target_size);
+	
+	Image  source;		///< The source image
+	wxSize target_size;	///< Size of the target image
+	Color  background;	///< Color for areas outside the source image
+	wxRect selection;	///< Area to slect from source
+	bool allow_outside;
+	bool aspect_fixed;	///< Aspect ratio lock?
+	// Filters
+	bool sharpen;
+	int sharpen_amount;
+	
+	/// Enforce relations between values
+	void constrain();
+	/// Get the sliced image
+	Image getSlice() const;
+	
+	// Zoom factor
+	inline double zoomX() const { return target_size.GetWidth()  / (double)selection.width;  }
+	inline double zoomY() const { return target_size.GetHeight() / (double)selection.height; }
+	inline void zoomX(double zoom) { selection.width  = target_size.GetWidth()  / zoom; }
+	inline void zoomY(double zoom) { selection.height = target_size.GetHeight() / zoom; }
+};
+
+
+// ----------------------------------------------------------------------------- : ImageSliceWindow
+
+/// Dialog for selecting a slice of an image
+class ImageSliceWindow : public wxDialog {
+  public:
+	ImageSliceWindow(Window* parent, const Image& source, const wxSize& target_size);
+	
+	/// Return the sliced image
+	Image getImage() const;
+	
+	// --------------------------------------------------- : Data
+  private:
+	// The slice we are extracting
+	ImageSlice slice;
+	// Gui items
+	ImageSlicePreview*   preview;
+	ImageSliceSelector*  selector;
+	wxRadioBox*          size;
+	wxSpinCtrl*          top, *left, *width, *height;
+	wxCheckBox*          fix_aspect;
+	wxSpinCtrl*          zoom, *zoom_x, *zoom_y;
+	wxSizer*             zoom_sizer, *zoom_fixed, *zoom_free;
+	wxCheckBox*          sharpen;
+	wxSlider*            sharpen_amount;
+	
+	// --------------------------------------------------- : Events
+	DECLARE_EVENT_TABLE();
+	
+	void onOk                 (wxCommandEvent&);
+	
+	void onSize               (wxSizeEvent&);
+	
+	void onChangeSize         (wxCommandEvent&);
+	void onChangeLeft         (wxCommandEvent&);
+	void onChangeTop          (wxCommandEvent&);
+	void onChangeWidth        (wxCommandEvent&);
+	void onChangeHeight       (wxCommandEvent&);
+	void onChangeFixAspect    (wxCommandEvent&);
+	void onChangeZoom         (wxSpinEvent&);
+	void onChangeZoomX        (wxSpinEvent&);
+	void onChangeZoomY        (wxSpinEvent&);
+	void onChangeSharpen      (wxCommandEvent&);
+	void onChangeSharpenAmount(wxScrollEvent&);
+	
+	// --------------------------------------------------- : Updating
+	
+	// Something changed in the selector control, update controls and selection displays
+	void onSelectionUpdate();
+	// The manual controls were changed
+	void onUpdateFromControl();
+	// Update the values in the controls
+	void updateControls();
+};
+
+
+// ----------------------------------------------------------------------------- : ImageSlicePreview
+
+/// A preview of the sliced image
+class ImageSlicePreview : public wxControl {
+  public:
+	ImageSlicePreview(Window* parent, int id, ImageSlice& slice);
+	
+	/// Notify that the slice was updated
+	void update();
+	
+	// --------------------------------------------------- : Data
+  private:
+	Bitmap bitmap;
+	ImageSlice& slice;
+	
+	bool mouse_down;
+	int mouseX, mouseY;		///< starting mouse position
+	wxRect start_selection; ///< selection in slice at start of dragging
+	
+	// --------------------------------------------------- : Events
+	DECLARE_EVENT_TABLE();
+	
+	wxSize DoGetBestSize() const;
+	
+	void onLeftDown(wxMouseEvent&);
+	void onLeftUp  (wxMouseEvent&);
+	void onMotion  (wxMouseEvent&);
+	
+	void onPaint(wxPaintEvent&);
+	void draw(DC& dc);
+};
+
+// ----------------------------------------------------------------------------- : ImageSliceSelector
+
+// A overview of the slicing of the image, allows to select the sliced area
+class ImageSliceSelector : public wxControl {
+  public:
+	ImageSliceSelector(Window* parent, int id, ImageSlice& slice);
+	
+	/// Notify that the slice was updated
+	void update();
+	
+	// --------------------------------------------------- : Data
+  private:
+	ImageSlice& slice;
+	Bitmap bitmap, bitmap_no_sel;	///< Bitmaps showing selection
+	
+	bool mouse_down;
+	int mouseX, mouseY;			///< starting mouse position
+	int dragX,  dragY;			///< corner that is being dragged
+	wxRect start_selection;		///< selection in slice at start of dragging
+	double scaleX, scaleY;		///< Amount the source image is scaled to fit in this control
+	static const int border = 8;
+	
+	// --------------------------------------------------- : Events
+	DECLARE_EVENT_TABLE();
+	
+	void onLeftDown(wxMouseEvent&);
+	void onLeftUp  (wxMouseEvent&);
+	void onMotion  (wxMouseEvent&);
+	
+	void onPaint(wxPaintEvent&);
+	void onSize(wxSizeEvent&);
+	
+	// Is the mouse on a (scale) handle?
+	bool onHandle(const wxMouseEvent& ev, int dx, int dy) const;
+	// Is the mouse on any handle?
+	bool onAnyHandle(const wxMouseEvent& ev, int* dxOut, int* dyOut) const;
+	// Return the position of a handle, dx,dy in {-1,0,1}
+	wxPoint handlePos(int dx, int dy) const;
+	
+	void draw(DC& dc);
+	// Draw a handle, dx and dy indicate the side, can be {-1,0,1}
+	void drawHandle(DC& dc, int dx, int dy);
+	void createBitmap();
+	
+	
+};
+
+// ----------------------------------------------------------------------------- : EOF
+#endif