+++ /dev/null
-/////////////////////////////////////////////////////////////////////////////
-// Name: rotate.cpp
-// Purpose: Image rotation test
-// Author: Carlos Moreno
-// Modified by:
-// Created: 6/2/2000
-// RCS-ID: $Id$
-// Copyright: (c) 2000
-// Licence: wxWindows licence
-/////////////////////////////////////////////////////////////////////////////
-
-// ============================================================================
-// declarations
-// ============================================================================
-
-// ----------------------------------------------------------------------------
-// headers
-// ----------------------------------------------------------------------------
-
-// For compilers that support precompilation, includes "wx.h".
-#include "wx/wxprec.h"
-
-#ifdef __BORLANDC__
-#pragma hdrstop
-#endif
-
-#ifndef WX_PRECOMP
-#include "wx/wx.h"
-#endif
-
-#include "wx/image.h"
-#include "wx/numdlg.h"
-#include "wx/dynarray.h"
-
-// ----------------------------------------------------------------------------
-// application class
-// ----------------------------------------------------------------------------
-
-class MyApp: public wxApp
-{
-public:
- virtual bool OnInit();
- const wxImage& GetImage() const { return m_image; }
-
-private:
- wxImage m_image;
-};
-
-// ----------------------------------------------------------------------------
-// data class for images that need to be rendered
-// ----------------------------------------------------------------------------
-
-class MyRenderedImage
-{
-public:
- MyRenderedImage(const wxBitmap& bmp, int x, int y)
- : m_bmp(bmp), m_x(x), m_y(y) { }
- wxBitmap m_bmp;
- int m_x, m_y;
-};
-
-// Declare a wxArray type to hold MyRenderedImages.
-WX_DECLARE_OBJARRAY(MyRenderedImage, ArrayOfImages);
-
-// ----------------------------------------------------------------------------
-// custom canvas control that we can draw on
-// ----------------------------------------------------------------------------
-
-class MyCanvas: public wxScrolledWindow
-{
-public:
- MyCanvas(wxWindow* parent);
-
- void ClearImages();
-
- void OnMouseLeftUp (wxMouseEvent & event);
- void OnMouseRightUp (wxMouseEvent & event);
- void OnPaint (wxPaintEvent & event);
-
-private:
- ArrayOfImages m_images;
-
- DECLARE_EVENT_TABLE()
-};
-
-// ----------------------------------------------------------------------------
-// main frame
-// ----------------------------------------------------------------------------
-
-class MyFrame: public wxFrame
-{
-public:
- MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
-
- void OnQuit (wxCommandEvent &);
- void OnAngle(wxCommandEvent &);
- void OnClear(wxCommandEvent &);
-
- double m_angle;
-
- DECLARE_EVENT_TABLE()
-
-private:
- MyCanvas *m_canvas;
-};
-
-// ----------------------------------------------------------------------------
-// menu item identifiers
-// ----------------------------------------------------------------------------
-
-enum
-{
- ID_Quit = 1,
- ID_Angle,
- ID_Clear
-};
-
-// ============================================================================
-// implementation
-// ============================================================================
-
-// ----------------------------------------------------------------------------
-// application class
-// ----------------------------------------------------------------------------
-
-IMPLEMENT_APP(MyApp)
-
-bool MyApp::OnInit()
-{
- if ( !wxApp::OnInit() )
- return false;
-
-#if wxUSE_LIBPNG
- wxImage::AddHandler( new wxPNGHandler );
-#endif
-
- m_image = wxImage(_T("duck.png"), wxBITMAP_TYPE_PNG);
-
- if ( !m_image.Ok() )
- {
- wxLogError(wxT("Can't load the test image, please copy it to the ")
- wxT("program directory"));
- return false;
- }
-
- MyFrame *frame = new MyFrame (_T("wxWidgets rotate sample"),
- wxPoint(20, 20), wxSize(600, 450));
-
- frame->Show (true);
- SetTopWindow (frame);
- return true;
-}
-
-// ----------------------------------------------------------------------------
-// data class for images that need to be rendered
-// ----------------------------------------------------------------------------
-
-#include "wx/arrimpl.cpp"
-WX_DEFINE_OBJARRAY(ArrayOfImages)
-
-// ----------------------------------------------------------------------------
-// custom canvas control that we can draw on
-// ----------------------------------------------------------------------------
-
-BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
- EVT_LEFT_UP (MyCanvas::OnMouseLeftUp)
- EVT_RIGHT_UP (MyCanvas::OnMouseRightUp)
- EVT_PAINT (MyCanvas::OnPaint)
-END_EVENT_TABLE()
-
-MyCanvas::MyCanvas(wxWindow* parent):
- wxScrolledWindow(parent, wxID_ANY)
-{
- SetBackgroundColour (wxColour (0,80,60));
- ClearBackground();
-}
-
-void MyCanvas::ClearImages ()
-{
- m_images.Clear();
- Refresh(true);
-}
-
-// Rotate with interpolation and with offset correction
-void MyCanvas::OnMouseLeftUp (wxMouseEvent & event)
-{
- MyFrame* frame = (MyFrame*) GetParent();
-
- wxPoint offset;
- const wxImage& img = wxGetApp().GetImage();
- wxImage img2 = img.Rotate(frame->m_angle,
- wxPoint(img.GetWidth() / 2, img.GetHeight() / 2), true, &offset);
-
- // Add the images to an array to be drawn later in OnPaint()
- m_images.Add(new MyRenderedImage(wxBitmap(img2),
- event.m_x + offset.x, event.m_y + offset.y));
- Refresh(false);
-}
-
-// without interpolation, and without offset correction
-void MyCanvas::OnMouseRightUp (wxMouseEvent & event)
-{
- MyFrame* frame = (MyFrame*) GetParent();
-
- const wxImage& img = wxGetApp().GetImage();
- wxImage img2 = img.Rotate(frame->m_angle,
- wxPoint(img.GetWidth() / 2, img.GetHeight() / 2), false);
-
- // Add the images to an array to be drawn later in OnPaint()
- m_images.Add(new MyRenderedImage(wxBitmap(img2), event.m_x, event.m_y));
- Refresh(false);
-}
-
-void MyCanvas::OnPaint (wxPaintEvent &)
-{
- size_t numImages = m_images.GetCount();
-
- wxPaintDC dc(this);
-
- dc.SetTextForeground(wxColour(255, 255, 255));
- dc.DrawText(wxT("Click on the canvas to draw a duck."), 10, 10);
-
- for (size_t i = 0; i < numImages; i++) {
- MyRenderedImage & image = m_images.Item(i);
- dc.DrawBitmap(image.m_bmp, image.m_x, image.m_y, true);
- }
-}
-
-// ----------------------------------------------------------------------------
-// main frame
-// ----------------------------------------------------------------------------
-
-BEGIN_EVENT_TABLE(MyFrame, wxFrame)
- EVT_MENU (ID_Quit, MyFrame::OnQuit)
- EVT_MENU (ID_Angle, MyFrame::OnAngle)
- EVT_MENU (ID_Clear, MyFrame::OnClear)
-END_EVENT_TABLE()
-
-MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
- : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size)
-{
- m_angle = 0.1;
-
- m_canvas = new MyCanvas(this);
-
- wxMenu *menuFile = new wxMenu;
- menuFile->Append (ID_Angle, _T("Set &angle...\tCtrl-A"));
- menuFile->Append (ID_Clear, _T("&Clear all ducks\tCtrl-C"));
- menuFile->AppendSeparator();
- menuFile->Append (ID_Quit, _T("E&xit\tAlt-X"));
-
- wxMenuBar *menuBar = new wxMenuBar;
- menuBar->Append (menuFile, _T("&File"));
-
- SetMenuBar (menuBar);
-}
-
-void MyFrame::OnAngle (wxCommandEvent &)
-{
- long degrees = (long)((180*m_angle)/M_PI);
- degrees = wxGetNumberFromUser(_T("Change the image rotation angle"),
- _T("Angle in degrees:"),
- _T("wxWidgets rotate sample"),
- degrees,
- -180, +180,
- this);
- if ( degrees != -1 )
- m_angle = (degrees * M_PI) / 180.0;
-}
-
-void MyFrame::OnQuit (wxCommandEvent &)
-{
- Close (true);
-}
-
-void MyFrame::OnClear (wxCommandEvent &)
-{
- m_canvas->ClearImages ();
-}
-
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