PImageWindow.cxx

//==============================================================================
// File:        PImageWindow.cxx
//
// Copyright (c) 2017, Phil Harvey, Queen's University
//==============================================================================
#include <stdio.h>
#include "PImageWindow.h"
#include "PImageCanvas.h"
#include "PResourceManager.h"
#include "PNotifyRaised.h"

char          * PImageWindow::sImageWindowClass = "PImageWindow";
PNotifyRaised * PImageWindow::sNotifyRaised     = 0;


//------------------------------------------------------------------------------------
// PImageWindow constructor
//
PImageWindow::PImageWindow(ImageData *data)
            : PScrollingWindow(data)
{
    Initialize();
}

PImageWindow::PImageWindow(ImageData *data, Widget shell, Widget mainPane)
            : PScrollingWindow(data)
{
    Initialize();
    SetShell(shell);
    SetMainPane(mainPane);
}

void PImageWindow::Initialize()
{
    mImage = NULL;
    mPrintable = 1;     // by default, image windows are printable
}

PImageWindow::~PImageWindow()
{
    if (mImage) {
        delete mImage;
    }
}

void PImageWindow::SetShell(Widget w)
{
    PWindow::SetShell(w);
    
    if (w) {
        /* handle circulate events for printing */
// THIS IS WHAT CAUSED THE ENDLESS RESIZE PROBLEM!!!! - PH 01/13/03
//      XtAddEventHandler(w, StructureNotifyMask|SubstructureNotifyMask, FALSE, (XtEventHandler)CirculateWindProc, this);
        XtAddRawEventHandler(w, StructureNotifyMask|SubstructureNotifyMask, FALSE, (XtEventHandler)CirculateWindProc, this);
    }
}

void PImageWindow::Show()
{
    SetScrolls();       // make sure our scrollbars are consistent
    
    PWindow::Show();    // let base class show the window
    
    /* define the cursor for our image */
    /* (must be done AFTER window is realized) */
    mImage->SetCursor(CURSOR_XHAIR);
}

void PImageWindow::UpdateSelf()
{
    if (mImage->IsDirty()) {
        mImage->Draw();
    }
}

void PImageWindow::SetScrolls()
{
    if (mImage) mImage->SetScrolls();
}

void PImageWindow::SetToHome(int n)
{
    if (mImage) {
        mImage->SetToHome(n);   // tell the image to move to the home position
        SetScrolls();           // make scrollbars consistent with this position
        SetDirty();             // inform of change in image data
    }
}

void PImageWindow::WasRaised()
{
    // send notification to sNotifyRaised that this window was raised
    if (sNotifyRaised && mPrintable) {
        // inform interested window of the window that was raised
        sNotifyRaised->NotifyRaised(this);
        // reset the flag
        sNotifyRaised = NULL;
    }
}

void PImageWindow::CirculateWindProc(Widget w, PImageWindow *aWind, XEvent *event)
{
    if (event->type == ConfigureNotify &&
        event->xconfigure.window == XtWindow(aWind->GetShell()))
    {
        aWind->WasRaised();
    }
}