renddlg.cpp

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// $Id: renddlg.cpp 1282 2006-06-09 09:46:49Z alex $
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
================================XARAHEADERSTART===========================
 
               Xara LX, a vector drawing and manipulation program.
                    Copyright (C) 1993-2006 Xara Group Ltd.
       Copyright on certain contributions may be held in joint with their
              respective authors. See AUTHORS file for details.

LICENSE TO USE AND MODIFY SOFTWARE
----------------------------------

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-----------------

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=================================XARAHEADEREND============================
 */
// A simple Dialog That does some Gavin Rendering into itself

/*
*/

#include "camtypes.h"
#include "renddlg.h"

//#include "mario.h"
//#include "rikdlg.h"
//#include "rik.h"
#include "menuops.h"

#include "ccdc.h"       // specific #includes needed for kernel-rendered dialogues
#include "dlgcol.h"
//#include "fillval.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "grnddib.h"

// This is not compulsory, but you may as well put it in so that the correct version
// of your file can be registered in the .exe
DECLARE_SOURCE("$Revision: 1282 $");

// An implement to match the Declare in the .h file.
// If you have many classes, it is recommended to place them all together, here at the start of the file
CC_IMPLEMENT_DYNCREATE(RenderDemoDlg, DialogOp)

// This will get Camelot to display the filename and linenumber of any memory allocations
// that are not released at program exit
#define new CAM_DEBUG_NEW


// Set the static vars of the render dialog
const CDlgMode RenderDemoDlg::Mode = MODELESS;
const UINT32 RenderDemoDlg::IDD = _R(IDD_RENDERDEMO);




/*******************************************************************************************

>   RenderDemoDlg::RenderDemoDlg() : DialogOp(RenderDlg::IDD, RenderDlg::Mode) 

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    6/10/94
    Purpose:    Constructs a Render Dialog

*******************************************************************************************/

RenderDemoDlg::RenderDemoDlg() : DialogOp(RenderDemoDlg::IDD, RenderDemoDlg::Mode) 
{
    // Set the 2 colours that we can toggle between
    First = DocColour(255,0,250);
    Second = DocColour(0,255,255);
    ShowFirst = TRUE;
}       



/*******************************************************************************************

>   RenderDemoDlg::~RenderDemoDlg()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    6/10/94
    Purpose:    Destructor, does nothing

*******************************************************************************************/

RenderDemoDlg::~RenderDemoDlg()
{
} 



/*******************************************************************************************

>   MsgResult RenderDemoDlg::Message(Msg* Message)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    6/10/94
    Purpose:    Handles all the Render dialog's messages 

*******************************************************************************************/

MsgResult RenderDemoDlg::Message(Msg* Message)
{
    // See if it is for us
    if (IS_OUR_DIALOG_MSG(Message))
    {
        // it is
        DialogMsg* Msg = (DialogMsg*)Message;

        // decide what to do
        switch (Msg->DlgMsg)
        {
            // Create message
            case DIM_CREATE :
                break;

            // Close and destroy the dialog 
            case DIM_COMMIT :
            case DIM_CANCEL :
            {
                Close();
                End();
                break;
            }

            case DIM_LFT_BN_CLICKED :
            {
                // See which button was pressed
                if (Msg->GadgetID == _R(IDC_REDRAWBTN))
                {
                    // Toggle the colour
                    ShowFirst = ShowFirst ? FALSE : TRUE;

                    // invalidate the gadget with the picture in it
                    InvalidateGadget(_R(IDC_REDRAW_ME));
                }
                break;
            }

            case DIM_REDRAW :
            {
                // This is where all the redrawing is done
                // Which control in the window is sending the redraw message (if there are many
                // grdraw controls you can tell which is which from the Gadget ID
                if (Msg->GadgetID == _R(IDC_REDRAW_ME))
                {
                    // Draw the redraw_me control in here
                    // Render this control
                    RenderControl((ReDrawInfoType*) Msg->DlgMsgParam);
                }
                else
                // there are no other controls that should get a redraw message ever
                {
                    // give out an error in debug builds, ignore in retail builds
                    ERROR3("Got a redraw message for a control I don't know about");
                    break;
                }

                break;
            }
            default:
                break;
        }
        
        // Return
        return (DLG_EAT_IF_HUNGRY(Msg));
    }

    return OK;  
}  




/********************************************************************************************

>   void RenderDemoDlg::RenderControl(ReDrawInfoType* ExtraInfo)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    11/10/94
    Inputs:     ExtraInfo - The structure that has the extra data we need to start rendering
    Purpose:    Renders a grad fill into the main control in this dialog.

********************************************************************************************/

void RenderDemoDlg::RenderControl(ReDrawInfoType* ExtraInfo)
{
    // Go get a render region
    DocRect VirtualSize(-ExtraInfo->dx/2, -ExtraInfo->dy/2, ExtraInfo->dx/2, ExtraInfo->dy/2);
    RenderRegion* pRender = CreateGRenderRegion(&VirtualSize, ExtraInfo);
    if (pRender!=NULL)
    {
        DialogColourInfo RedrawColours;     // Get a supplier for default dlg colours

        // Render stuff in here
        // Build a Linear fill attribute
        LinearFillAttribute MyGradFill;
        MyGradFill.Colour = DocColour(255, 255, 0);
        MyGradFill.EndColour = DocColour(0, 255, 255);
        MyGradFill.StartPoint = DocCoord(0, ExtraInfo->dy);
        MyGradFill.EndPoint = DocCoord(ExtraInfo->dx, 0);

        // Build a path
        Path InkPath;
        InkPath.Initialise(12,12);
        InkPath.FindStartOfPath();

        // Get the coords used to build a shape
        INT32 dx = ExtraInfo->dx / 2;
        INT32 dy = ExtraInfo->dy / 2;
        INT32 Midx = ExtraInfo->dx / 4;
        INT32 Midy = ExtraInfo->dy / 4;

        // build a circle in the middle of the control
        InkPath.InsertMoveTo(DocCoord(Midx, dy));
        InkPath.InsertCurveTo(DocCoord(Midx+Midx/2, dy), DocCoord(dx, Midy+Midy/2), DocCoord(dx, Midy));
        InkPath.InsertCurveTo(DocCoord(dx, Midy-Midy/2), DocCoord(Midx+Midx/2, 0), DocCoord(Midx, 0));
        InkPath.InsertCurveTo(DocCoord(Midx-Midx/2, 0), DocCoord(0, Midy-Midy/2), DocCoord(0, Midy));
        InkPath.InsertCurveTo(DocCoord(0, Midy+Midy/2), DocCoord(Midx-Midx/2, dy), DocCoord(Midx, dy));
        InkPath.IsFilled = TRUE;
        
        // A Grey colour [...hmmm, it's not a very grey grey any more... oragnge more like]
        DocColour Grey(255,200,0);

        // Render the attributes and the a rectangle
        pRender->SaveContext();
        pRender->SetLineColour(Grey);

        // Draw a rectangle to fill in the background - Fill with Dialogue Background colour
        DocRect DrawMe(0, 0, ExtraInfo->dx, ExtraInfo->dy);
        pRender->SetFillColour(RedrawColours.DialogBack());
        pRender->DrawRect(&VirtualSize);

        // Draw some shapes and stuff
        pRender->SetFillGeometry(&MyGradFill, FALSE);
        pRender->DrawPath(&InkPath);

        // Build a path
        Path TriPath;
        TriPath.Initialise(12,12);
        TriPath.FindStartOfPath();

        // build a circle in the middle of the control
        TriPath.InsertMoveTo(VirtualSize.lo);
        TriPath.InsertLineTo(DocCoord(VirtualSize.hi.x, VirtualSize.lo.y));
        TriPath.InsertLineTo(DocCoord(0, VirtualSize.hi.y));
        TriPath.InsertLineTo(VirtualSize.lo);
        TriPath.IsFilled = TRUE;

        LinearFillAttribute MyTriFill;
        MyTriFill.Colour = ShowFirst ? First : Second;
        MyTriFill.EndColour = DocColour(0,0,0);
        MyTriFill.StartPoint = DocCoord(ExtraInfo->dx, 0);
        MyTriFill.EndPoint = DocCoord(0, ExtraInfo->dy);

        pRender->SetFillGeometry(&MyTriFill, FALSE);
        pRender->DrawPath(&TriPath);

        pRender->RestoreContext();

        // Get rid of the render region
        DestroyGRenderRegion(pRender);
    }

    // and animate it!
    if (ShowFirst)
    {
        INT32 Red, Green, Blue;
        First.GetRGBValue(&Red, &Green, &Blue);

        if (Blue>0)
        {
            // Set the colour back again
            Blue -= 10;
            First.SetRGBValue(Red, Green, Blue);

            // redraw it
            InvalidateGadget(_R(IDC_REDRAW_ME));
        }
    }
    else
    {
        // Set the colour back to how it was
        First.SetRGBValue(255, 0, 250);
    }
}



/*******************************************************************************************

>   OpState RenderDemoDlg::GetState(String_256*, OpDescriptor*)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    6/10/94
    Purpose:    Returns the OpState of the Render dialogue operation

*******************************************************************************************/

OpState RenderDemoDlg::GetState(String_256*, OpDescriptor*)
{
    return OpState(FALSE, FALSE);
}

         

/*******************************************************************************************

>   BOOL RenderDemoDlg::Init()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    6/10/94
    Returns:    FALSE if it fails (due to lack of memory)
    Purpose:    Creates an OpDescriptor for a Render Dialog

*******************************************************************************************/
BOOL RenderDemoDlg::Init()
{  
    return RegisterOpDescriptor(0,                              // Tool ID
                                _R(IDS_RENDERDEMO),                 // String resouirce ID
                                CC_RUNTIME_CLASS(RenderDemoDlg),// Runtime class
                                OPTOKEN_RENDERDEMODLG,          // Token string
                                RenderDemoDlg::GetState,        // GetState function
                                0,                              // Help ID
                                0,                              // Bubble ID
                                0,                              // Resource ID
                                0,                              // Control ID
                                SYSTEMBAR_ILLEGAL,              // Bar ID
                                FALSE,                          // Recieve system messages
                                FALSE,                          // Smart duplicate operation
                                TRUE,                           // Clean operation
                                0,                              // No vertical counterpart
                                0);                             // String for one copy only
}   
 

         

/*******************************************************************************************

>   void RenderDemoDlg::Do(OpDescriptor*)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    6/10/94
    Purpose:    Creates and shows a Render Demo dialog

*******************************************************************************************/
void RenderDemoDlg::Do(OpDescriptor*)
{
    // if we can create the dialog, then open it
    if (Create())
        Open();
    else
        TRACE( _T("Failed to create Render Demo Dialog\n"));
}

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