/*
 * PROJECT:     PAINT for ReactOS
 * LICENSE:     LGPL
 * FILE:        base/applications/paint/selection.c
 * PURPOSE:     Window procedure of the selection window
 * PROGRAMMERS: Benedikt Freisen
 */

/* INCLUDES *********************************************************/

#include <windows.h>
#include "globalvar.h"
#include "drawing.h"
#include "history.h"
#include "mouse.h"

/* FUNCTIONS ********************************************************/

BOOL moving = FALSE;
short xPos;
short yPos;

LRESULT CALLBACK
SelectionWinProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
        case WM_PAINT:
        {
            if (!moving)
            {
                HDC hDC = GetDC(hwnd);
                DefWindowProc(hwnd, message, wParam, lParam);
                SelectionFrame(hDC, 1, 1, rectSel_dest[2] * zoom / 1000 + 5,
                               rectSel_dest[3] * zoom / 1000 + 5);
                ReleaseDC(hwnd, hDC);
            }
            break;
        }
        case WM_LBUTTONDOWN:
            xPos = LOWORD(lParam);
            yPos = HIWORD(lParam);
            SetCapture(hwnd);
            moving = TRUE;
            break;
        case WM_MOUSEMOVE:
            if (moving)
            {
                resetToU1();
                rectSel_dest[0] += (short)LOWORD(lParam) - xPos;
                rectSel_dest[1] += (short)HIWORD(lParam) - yPos;

                Rect(hDrawingDC, rectSel_src[0], rectSel_src[1], rectSel_src[0] + rectSel_src[2],
                     rectSel_src[1] + rectSel_src[3], bgColor, bgColor, 0, TRUE);
                if (transpBg == 0)
                    BitBlt(hDrawingDC, rectSel_dest[0], rectSel_dest[1], rectSel_dest[2], rectSel_dest[3],
                           hSelDC, 0, 0, SRCCOPY);
                else
                    BitBlt(hDrawingDC, rectSel_dest[0], rectSel_dest[1], rectSel_dest[2], rectSel_dest[3],
                           hSelDC, 0, 0, SRCAND);
                    //TransparentBlt(hDrawingDC, rectSel_dest[0], rectSel_dest[1], rectSel_dest[2], rectSel_dest[3], 
                    //               hSelDC, 0, 0, rectSel_dest[2], rectSel_dest[3], bgColor);
                SendMessage(hImageArea, WM_PAINT, 0, 0);
                xPos = LOWORD(lParam);
                yPos = HIWORD(lParam);
                //SendMessage(hwnd, WM_PAINT, 0, 0);
            }
            break;
        case WM_LBUTTONUP:
            if (moving)
            {
                moving = FALSE;
                ReleaseCapture();
                placeSelWin();
                ShowWindow(hSelection, SW_HIDE);
                ShowWindow(hSelection, SW_SHOW);
            }
            break;
        default:
            return DefWindowProc(hwnd, message, wParam, lParam);
    }

    return 0;
}