CocoaMainWindow.cpp

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// *****************************************************************
// Filename:  CocoaMainWindow.cpp
// Copyright: Pedram Azad, Chair Prof. Dillmann (IAIM),
//            Institute for Computer Science and Engineering (CSE),
//            University of Karlsruhe. All rights reserved.
// Author:    Florian Hecht
// Date:      2008
// *****************************************************************


// *****************************************************************
// necessary includes
// *****************************************************************

#include "CocoaMainWindow.h"
#include "Interfaces/MainWindowEventInterface.h"

#include "Image/ByteImage.h"
#include "Image/ImageProcessor.h"

#ifdef USE_OPENGL

#endif

enum CocoaWidgetType
{
        eImage = 0,
        eButton,
        eLabel,
        eCheckBox,
        eTextEdit,
        eSlider,
        eComboBox,
        eGLWidget
};

struct CCocoaMainWindowWidget
{
        CocoaWidgetType type;
        void *cocoa_ptr;
        int width;
        int height;
};



// these functions are defined in CocoaImplementation.m
extern "C"
{
        void* CocoaCreateMainWindow(int x, int y, int width, int height, const char *title, void* main_window_ptr);
  void CocoaDestroyMainWindow(void* window);
        void* CocoaCreateImage(void* window, int x, int y, int width, int height, void* ptr);
        void* CocoaCreateButton(void* window, int x, int y, int width, int height, const char *text, void* ptr);
        void* CocoaCreateLabel(void* window, int x, int y, int width, int height, const char *text, void* ptr);
        void* CocoaCreateCheckBox(void* window, int x, int y, int width, int height, const char *text, bool checked, void* ptr);
        void* CocoaCreateTextEdit(void* window, int x, int y, int width, int height, const char *text, void* ptr);
        void* CocoaCreateSlider(void* window, int x, int y, int width, int height, int min_value, int max_value, int step, int value, void* ptr);
        void* CocoaCreateComboBox(void* window, int x, int y, int width, int height, int num_entries, const char **entries, int current_entry, void* ptr);
        void* CocoaCreateOpenGLWidget(void* window, int x, int y, int width, int height, void* ptr);
        
        int CocoaGetInt(void* ptr);
        void CocoaGetText(void* ptr, char *str, int len);
        void CocoaGetTitle(void* ptr, char *str, int len);
        int CocoaGetComboBoxSelection(void *ptr);
        
        void CocoaSetInt(void* ptr, int value);
        void CocoaSetText(void* ptr, const char *str);
        void CocoaSetTitle(void* ptr, const char *str);
        void CocoaSetComboBoxSelection(void *ptr, int value);
        void CocoaSetImage(void* ptr, int width, int height, unsigned char *pixels);
        
        void CocoaShow(void* ptr);
        void CocoaHide(void* ptr);
        void CocoaShowWindow(void* ptr);
        void CocoaHideWindow(void* ptr);

        int CocoaGetModifierKeyState();
        
        void CocoaSwapBuffers(void* ptr);
        void CocoaMakeCurrent(void* ptr);
        
        void CocoaGetCurrentWorkingDirectory(char* str, int len);
}

class SetTheCWDHack
{
public:
        SetTheCWDHack()
        {
                char buf[1024];
                CocoaGetCurrentWorkingDirectory(buf, 1024);
                chdir(buf);
        }
};

SetTheCWDHack hack;

// this is for callbacks from the ObjC implementation
extern "C" void EventCallback(void* window, void* widget, int type, int *params)
{
        CCocoaMainWindow *main_window = (CCocoaMainWindow*)window;
        main_window->EventCallback(widget, type, params);
}

void CCocoaMainWindow::EventCallback(void* widget, int type, int *params)
{
        if (m_event_callback)
        {
                int s = m_widgets.size();
                
                for (int i = 0; i < s; i++)
                {
                        CCocoaMainWindowWidget *w = m_widgets[i];
                        
                        if (w->cocoa_ptr == widget)
                        {
                                switch (w->type)
                                {
                                case eImage:
                                        {
                                                if (type == 1)
                                                {
                                                        m_event_callback->PointClicked(w, params[0], params[1]);
                                                }
                                                else if (type == 2)
                                                {
                                                        m_event_callback->RectSelected(w, params[0], params[1], params[2], params[3]);
                                                }
                                                else if (type == 3)
                                                {
                                                        m_event_callback->MouseDown(w, params[0], params[1], params[2]);
                                                }
                                                else if (type == 4)
                                                {
                                                        m_event_callback->MouseUp(w, params[0], params[1], params[2]);
                                                }
                                                else if (type == 5)
                                                {
                                                        m_event_callback->MouseMove(w, params[0], params[1]);
                                                }
                                                else if (type == 6)
                                                {
                                                        m_event_callback->KeyDown(w, params[0]);
                                                }
                                                else if (type == 7)
                                                {
                                                        m_event_callback->KeyUp(w, params[0]);
                                                }
                                        }
                                        break;
                                case eButton: m_event_callback->ButtonPushed(w); break;
                                case eCheckBox:
                                        {
                                                int v = CocoaGetInt(w->cocoa_ptr);
                                                m_event_callback->ValueChanged(w, v);
                                        }
                                        break;
                                case eTextEdit: m_event_callback->ValueChanged(w, -1); break;
                                case eSlider:
                                        {
                                                int v = CocoaGetInt(w->cocoa_ptr);
                                                m_event_callback->ValueChanged(w, v);
                                        }
                                        break;
                                case eComboBox:
                                        {
                                                int v = CocoaGetComboBoxSelection(w->cocoa_ptr);
                                                m_event_callback->ValueChanged(w, v);
                                        }
                                        break;
                                case eGLWidget:
                                        {
                                                if (type == 3)
                                                {
                                                        m_event_callback->MouseDown(w, params[0], params[1], params[2]);
                                                }
                                                else if (type == 4)
                                                {
                                                        m_event_callback->MouseUp(w, params[0], params[1], params[2]);
                                                }
                                                else if (type == 5)
                                                {
                                                        m_event_callback->MouseMove(w, params[0], params[1]);
                                                }
                                                else if (type == 6)
                                                {
                                                        m_event_callback->KeyDown(w, params[0]);
                                                }
                                                else if (type == 7)
                                                {
                                                        m_event_callback->KeyUp(w, params[0]);
                                                }
                                        }
                                                break;
                                default: break;
                                }
                                
                                break;
                        }
                }
        }
}





CCocoaMainWindow::CCocoaMainWindow(int x, int y, int width, int height, const char *title)
{
        m_cocoa_main_window = CocoaCreateMainWindow(x, y, width, height, title, this);
        
        m_width = width;
        m_height = height;
        
        if (!m_cocoa_main_window)
                printf("error: couldn't create Cocoa main window\n");
        
        m_event_callback = NULL;
}

CCocoaMainWindow::~CCocoaMainWindow()
{
        int s = m_widgets.size();
        
        for (int i = 0; i < s; i++)
        {
                CCocoaMainWindowWidget *widget = m_widgets[i];
                delete widget;
        }
        m_widgets.clear();
  
  CocoaDestroyMainWindow(m_cocoa_main_window);
  m_cocoa_main_window = NULL;
}

// create widgets
WIDGET_HANDLE CCocoaMainWindow::AddImage(int x, int y, int width, int height, WIDGET_HANDLE parent)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)parent;
        
        FixPosition(x, y, width, height);
        
        void* ptr = CocoaCreateImage(m_cocoa_main_window, x, y, width, height, (w != NULL ? w->cocoa_ptr : NULL));
        if (ptr != NULL)
        {
                CCocoaMainWindowWidget *widget = new CCocoaMainWindowWidget;
                
                widget->type = eImage;
                widget->cocoa_ptr = ptr;
                widget->width = width;
                widget->height = height;
                
                m_widgets.push_back(widget);
                
                return (WIDGET_HANDLE)widget;
        }

        
        return (WIDGET_HANDLE)NULL;
}

WIDGET_HANDLE CCocoaMainWindow::AddButton(int x, int y, int width, int height, const char *text, WIDGET_HANDLE parent)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)parent;
        
        FixPosition(x, y, width, height);
        
        void* ptr = CocoaCreateButton(m_cocoa_main_window, x, y, width, height, text, (w != NULL ? w->cocoa_ptr : NULL));
        if (ptr != NULL)
        {
                CCocoaMainWindowWidget *widget = new CCocoaMainWindowWidget;
                
                widget->type = eButton;
                widget->cocoa_ptr = ptr;
                
                m_widgets.push_back(widget);
                
                return (WIDGET_HANDLE)widget;
        }
        
        return (WIDGET_HANDLE)NULL;
}

WIDGET_HANDLE CCocoaMainWindow::AddLabel(int x, int y, int width, int height, const char *text, WIDGET_HANDLE parent)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)parent;
        
        FixPosition(x, y, width, height);
        
        void* ptr = CocoaCreateLabel(m_cocoa_main_window, x, y, width, height, text, (w != NULL ? w->cocoa_ptr : NULL));
        if (ptr != NULL)
        {
                CCocoaMainWindowWidget *widget = new CCocoaMainWindowWidget;
                
                widget->type = eLabel;
                widget->cocoa_ptr = ptr;
                
                m_widgets.push_back(widget);
                
                return (WIDGET_HANDLE)widget;
        }
        
        return (WIDGET_HANDLE)NULL;
}

WIDGET_HANDLE CCocoaMainWindow::AddCheckBox(int x, int y, int width, int height, const char *text, bool checked, WIDGET_HANDLE parent)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)parent;
        
        FixPosition(x, y, width, height);
        
        void* ptr = CocoaCreateCheckBox(m_cocoa_main_window, x, y, width, height, text, checked, (w != NULL ? w->cocoa_ptr : NULL));
        if (ptr != NULL)
        {
                CCocoaMainWindowWidget *widget = new CCocoaMainWindowWidget;
                
                widget->type = eCheckBox;
                widget->cocoa_ptr = ptr;
                
                m_widgets.push_back(widget);
                
                return (WIDGET_HANDLE)widget;
        }

        return (WIDGET_HANDLE)NULL;
}

WIDGET_HANDLE CCocoaMainWindow::AddTextEdit(int x, int y, int width, int height, const char *text, WIDGET_HANDLE parent)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)parent;
        
        FixPosition(x, y, width, height);
        
        void* ptr = CocoaCreateTextEdit(m_cocoa_main_window, x, y, width, height, text, (w != NULL ? w->cocoa_ptr : NULL));
        if (ptr != NULL)
        {
                CCocoaMainWindowWidget *widget = new CCocoaMainWindowWidget;
                
                widget->type = eTextEdit;
                widget->cocoa_ptr = ptr;
                
                m_widgets.push_back(widget);
                
                return (WIDGET_HANDLE)widget;
        }

        return (WIDGET_HANDLE)NULL;
}

WIDGET_HANDLE CCocoaMainWindow::AddSlider(int x, int y, int width, int height, int min_value, int max_value, int step, int value, WIDGET_HANDLE parent)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)parent;
        
        FixPosition(x, y, width, height);
        
        void* ptr = CocoaCreateSlider(m_cocoa_main_window, x, y, width, height, min_value, max_value, step, value, (w != NULL ? w->cocoa_ptr : NULL));
        if (ptr != NULL)
        {
                CCocoaMainWindowWidget *widget = new CCocoaMainWindowWidget;
                
                widget->type = eSlider;
                widget->cocoa_ptr = ptr;
                
                m_widgets.push_back(widget);
                
                return (WIDGET_HANDLE)widget;
        }

        return (WIDGET_HANDLE)NULL;
}

WIDGET_HANDLE CCocoaMainWindow::AddComboBox(int x, int y, int width, int height, int num_entries, const char **entries, int current_entry, WIDGET_HANDLE parent)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)parent;
        
        FixPosition(x, y, width, height);
        
        void* ptr = CocoaCreateComboBox(m_cocoa_main_window, x, y, width, height, num_entries, entries, current_entry, (w != NULL ? w->cocoa_ptr : NULL));
        if (ptr != NULL)
        {
                CCocoaMainWindowWidget *widget = new CCocoaMainWindowWidget;
                
                widget->type = eComboBox;
                widget->cocoa_ptr = ptr;
                
                m_widgets.push_back(widget);
                
                return (WIDGET_HANDLE)widget;
        }

        return (WIDGET_HANDLE)NULL;
}

WIDGET_HANDLE CCocoaMainWindow::AddGLWidget(int x, int y, int width, int height, WIDGET_HANDLE parent)
{
#ifdef USE_OPENGL
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)parent;
        
        FixPosition(x, y, width, height);
        
        void* ptr = CocoaCreateOpenGLWidget(m_cocoa_main_window, x, y, width, height, (w != NULL ? w->cocoa_ptr : NULL));
        if (ptr != NULL)
        {
                CCocoaMainWindowWidget *widget = new CCocoaMainWindowWidget;
                
                widget->type = eGLWidget;
                widget->cocoa_ptr = ptr;
                
                m_widgets.push_back(widget);
                
                return (WIDGET_HANDLE)widget;
        }
        
#endif

        return (WIDGET_HANDLE)NULL;
}


// access to widget attributes
bool CCocoaMainWindow::GetText(WIDGET_HANDLE widget, char *text, int len)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)widget;
        
        if (w->type != eImage && w->type != eGLWidget && w->type != eSlider && w->type != eComboBox)
        {
                if (w->type == eButton || w->type == eCheckBox)
                        CocoaGetTitle(w->cocoa_ptr, text, len);
                else
                        CocoaGetText(w->cocoa_ptr, text, len);
                
                return true;
        }
          
        return false;
}
bool CCocoaMainWindow::SetText(WIDGET_HANDLE widget, const char *text)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)widget;
        
        if (w->type != eImage && w->type != eGLWidget && w->type != eSlider && w->type != eComboBox)
        {
                if (w->type == eButton || w->type == eCheckBox)
                        CocoaSetTitle(w->cocoa_ptr, text);
                else
                        CocoaSetText(w->cocoa_ptr, text);
                
                return true;
        }

        return false;
}

bool CCocoaMainWindow::SetImage(WIDGET_HANDLE widget, const CByteImage *pImage)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)widget;
        
        if (w->type == eImage)
        {
                if (w->width != pImage->width || w->height != pImage->height)
                {
                        printf("error: CCocoaMainWindow::SetImage: image dimensions do not match dimensions of image widget!\n");
                        return false;
                }
                
                if (pImage->type == CByteImage::eRGB24)
                {
                        CocoaSetImage(w->cocoa_ptr, pImage->width, pImage->height, pImage->pixels);
                }
                else
                {
                        CByteImage temp(pImage->width, pImage->height, CByteImage::eRGB24);
                        
                        ImageProcessor::ConvertImage(pImage, &temp);
                        
                        CocoaSetImage(w->cocoa_ptr, pImage->width, pImage->height, temp.pixels);
                }
                
                return true;
        }
        
        return false;
}

bool CCocoaMainWindow::GetValue(WIDGET_HANDLE widget, int &value)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)widget;
        
        if (w->type == eComboBox)
        {
                value = CocoaGetComboBoxSelection(w->cocoa_ptr);
                
                return true;
        }
        else if (w->type == eCheckBox || w->type == eSlider)
        {
                value = CocoaGetInt(w->cocoa_ptr);
                
                return true;
        }
        
        return false;
}

bool CCocoaMainWindow::SetValue(WIDGET_HANDLE widget, int value)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)widget;
        
        if (w->type == eComboBox)
        {
                CocoaSetComboBoxSelection(w->cocoa_ptr, value);
                
                return true;
        }
        else if (w->type == eCheckBox || w->type == eSlider)
        {
                CocoaSetInt(w->cocoa_ptr, value);
                
                return true;
        }
        
        return false;
}

bool CCocoaMainWindow::SwapBuffersGLWidget(WIDGET_HANDLE widget)
{
#ifdef USE_OPENGL
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)widget;
        
        if (w->type == eGLWidget)
        {
                CocoaSwapBuffers(w->cocoa_ptr);
                
                return true;
        }
        
#endif
        
        return false;
}

bool CCocoaMainWindow::MakeCurrentGLWidget(WIDGET_HANDLE widget)
{
#ifdef USE_OPENGL
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)widget;
        
        if (w->type == eGLWidget)
        {
                CocoaMakeCurrent(w->cocoa_ptr);
                
                return true;
        }
        
#endif
        
        return false;
}



// window control
void CCocoaMainWindow::Show(WIDGET_HANDLE widget)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)widget;
        
        if (w != NULL)
        {
                CocoaShow(w->cocoa_ptr);
        }
        else
        {
                CocoaShowWindow(m_cocoa_main_window);
        }
}
void CCocoaMainWindow::Hide(WIDGET_HANDLE widget)
{
        CCocoaMainWindowWidget *w = (CCocoaMainWindowWidget*)widget;
        
        if (w != NULL)
        {
                CocoaHide(w->cocoa_ptr);
        }
        else
        {
                CocoaHideWindow(m_cocoa_main_window);
        }
}

int CCocoaMainWindow::GetModifierKeyState()
{
        return CocoaGetModifierKeyState();
}

void CCocoaMainWindow::FixPosition(int &x, int &y, int &width, int &height)
{
        y = m_height - y - height;
}