reactos/base/applications/mspaint/mouse.cpp

530 lines
19 KiB
C++

/*
* PROJECT: PAINT for ReactOS
* LICENSE: LGPL
* FILE: base/applications/mspaint/mouse.cpp
* PURPOSE: Things which should not be in the mouse event handler itself
* PROGRAMMERS: Benedikt Freisen
*/
/* INCLUDES *********************************************************/
#include "precomp.h"
/* FUNCTIONS ********************************************************/
void
placeSelWin()
{
selectionWindow.MoveWindow(selectionModel.GetDestRectLeft() * toolsModel.GetZoom() / 1000, selectionModel.GetDestRectTop() * toolsModel.GetZoom() / 1000,
selectionModel.GetDestRectWidth() * toolsModel.GetZoom() / 1000 + 6, selectionModel.GetDestRectHeight() * toolsModel.GetZoom() / 1000 + 6, TRUE);
selectionWindow.BringWindowToTop();
imageArea.InvalidateRect(NULL, FALSE);
}
void
regularize(LONG x0, LONG y0, LONG& x1, LONG& y1)
{
if (abs(x1 - x0) >= abs(y1 - y0))
y1 = y0 + (y1 > y0 ? abs(x1 - x0) : -abs(x1 - x0));
else
x1 = x0 + (x1 > x0 ? abs(y1 - y0) : -abs(y1 - y0));
}
void
roundTo8Directions(LONG x0, LONG y0, LONG& x1, LONG& y1)
{
if (abs(x1 - x0) >= abs(y1 - y0))
{
if (abs(y1 - y0) * 5 < abs(x1 - x0) * 2)
y1 = y0;
else
y1 = y0 + (y1 > y0 ? abs(x1 - x0) : -abs(x1 - x0));
}
else
{
if (abs(x1 - x0) * 5 < abs(y1 - y0) * 2)
x1 = x0;
else
x1 = x0 + (x1 > x0 ? abs(y1 - y0) : -abs(y1 - y0));
}
}
POINT pointStack[256];
short pointSP;
void
startPaintingL(HDC hdc, LONG x, LONG y, COLORREF fg, COLORREF bg)
{
start.x = x;
start.y = y;
last.x = x;
last.y = y;
switch (toolsModel.GetActiveTool())
{
case TOOL_FREESEL:
selectionWindow.ShowWindow(SW_HIDE);
selectionModel.ResetPtStack();
selectionModel.PushToPtStack(x, y);
break;
case TOOL_LINE:
case TOOL_RECT:
case TOOL_ELLIPSE:
case TOOL_RRECT:
imageModel.CopyPrevious();
break;
case TOOL_RECTSEL:
case TOOL_TEXT:
imageModel.CopyPrevious();
selectionWindow.ShowWindow(SW_HIDE);
selectionModel.SetSrcRectSizeToZero();
break;
case TOOL_RUBBER:
imageModel.CopyPrevious();
Erase(hdc, x, y, x, y, bg, toolsModel.GetRubberRadius());
break;
case TOOL_FILL:
imageModel.CopyPrevious();
Fill(hdc, x, y, fg);
break;
case TOOL_PEN:
imageModel.CopyPrevious();
SetPixel(hdc, x, y, fg);
break;
case TOOL_BRUSH:
imageModel.CopyPrevious();
Brush(hdc, x, y, x, y, fg, toolsModel.GetBrushStyle());
break;
case TOOL_AIRBRUSH:
imageModel.CopyPrevious();
Airbrush(hdc, x, y, fg, toolsModel.GetAirBrushWidth());
break;
case TOOL_BEZIER:
pointStack[pointSP].x = x;
pointStack[pointSP].y = y;
if (pointSP == 0)
{
imageModel.CopyPrevious();
pointSP++;
}
break;
case TOOL_SHAPE:
pointStack[pointSP].x = x;
pointStack[pointSP].y = y;
if (pointSP + 1 >= 2)
Poly(hdc, pointStack, pointSP + 1, fg, bg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle(), FALSE, FALSE);
if (pointSP == 0)
{
imageModel.CopyPrevious();
pointSP++;
}
break;
}
}
void
whilePaintingL(HDC hdc, LONG x, LONG y, COLORREF fg, COLORREF bg)
{
switch (toolsModel.GetActiveTool())
{
case TOOL_FREESEL:
if (selectionModel.PtStackSize() == 1)
imageModel.CopyPrevious();
selectionModel.PushToPtStack(max(0, min(x, imageModel.GetWidth())), max(0, min(y, imageModel.GetHeight())));
imageModel.ResetToPrevious();
selectionModel.DrawFramePoly(hdc);
break;
case TOOL_RECTSEL:
case TOOL_TEXT:
{
POINT temp;
imageModel.ResetToPrevious();
temp.x = max(0, min(x, imageModel.GetWidth()));
temp.y = max(0, min(y, imageModel.GetHeight()));
selectionModel.SetSrcAndDestRectFromPoints(start, temp);
RectSel(hdc, start.x, start.y, temp.x, temp.y);
break;
}
case TOOL_RUBBER:
Erase(hdc, last.x, last.y, x, y, bg, toolsModel.GetRubberRadius());
break;
case TOOL_PEN:
Line(hdc, last.x, last.y, x, y, fg, 1);
break;
case TOOL_BRUSH:
Brush(hdc, last.x, last.y, x, y, fg, toolsModel.GetBrushStyle());
break;
case TOOL_AIRBRUSH:
Airbrush(hdc, x, y, fg, toolsModel.GetAirBrushWidth());
break;
case TOOL_LINE:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
roundTo8Directions(start.x, start.y, x, y);
Line(hdc, start.x, start.y, x, y, fg, toolsModel.GetLineWidth());
break;
case TOOL_BEZIER:
imageModel.ResetToPrevious();
pointStack[pointSP].x = x;
pointStack[pointSP].y = y;
switch (pointSP)
{
case 1:
Line(hdc, pointStack[0].x, pointStack[0].y, pointStack[1].x, pointStack[1].y, fg,
toolsModel.GetLineWidth());
break;
case 2:
Bezier(hdc, pointStack[0], pointStack[2], pointStack[2], pointStack[1], fg, toolsModel.GetLineWidth());
break;
case 3:
Bezier(hdc, pointStack[0], pointStack[2], pointStack[3], pointStack[1], fg, toolsModel.GetLineWidth());
break;
}
break;
case TOOL_RECT:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
regularize(start.x, start.y, x, y);
Rect(hdc, start.x, start.y, x, y, fg, bg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle());
break;
case TOOL_SHAPE:
imageModel.ResetToPrevious();
pointStack[pointSP].x = x;
pointStack[pointSP].y = y;
if ((pointSP > 0) && (GetAsyncKeyState(VK_SHIFT) < 0))
roundTo8Directions(pointStack[pointSP - 1].x, pointStack[pointSP - 1].y,
pointStack[pointSP].x, pointStack[pointSP].y);
if (pointSP + 1 >= 2)
Poly(hdc, pointStack, pointSP + 1, fg, bg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle(), FALSE, FALSE);
break;
case TOOL_ELLIPSE:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
regularize(start.x, start.y, x, y);
Ellp(hdc, start.x, start.y, x, y, fg, bg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle());
break;
case TOOL_RRECT:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
regularize(start.x, start.y, x, y);
RRect(hdc, start.x, start.y, x, y, fg, bg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle());
break;
}
last.x = x;
last.y = y;
}
void
endPaintingL(HDC hdc, LONG x, LONG y, COLORREF fg, COLORREF bg)
{
switch (toolsModel.GetActiveTool())
{
case TOOL_FREESEL:
{
selectionModel.CalculateBoundingBoxAndContents(hdc);
if (selectionModel.PtStackSize() > 1)
{
selectionModel.DrawBackgroundPoly(hdc, bg);
imageModel.CopyPrevious();
selectionModel.DrawSelection(hdc);
placeSelWin();
selectionWindow.ShowWindow(SW_SHOW);
ForceRefreshSelectionContents();
}
selectionModel.ResetPtStack();
break;
}
case TOOL_RECTSEL:
imageModel.ResetToPrevious();
if (selectionModel.IsSrcRectSizeNonzero())
{
selectionModel.CalculateContents(hdc);
selectionModel.DrawBackgroundRect(hdc, bg);
imageModel.CopyPrevious();
selectionModel.DrawSelection(hdc);
placeSelWin();
selectionWindow.ShowWindow(SW_SHOW);
ForceRefreshSelectionContents();
}
break;
case TOOL_TEXT:
imageModel.ResetToPrevious();
if (selectionModel.IsSrcRectSizeNonzero())
{
imageModel.CopyPrevious();
placeSelWin();
selectionWindow.ShowWindow(SW_SHOW);
ForceRefreshSelectionContents();
}
break;
case TOOL_RUBBER:
Erase(hdc, last.x, last.y, x, y, bg, toolsModel.GetRubberRadius());
break;
case TOOL_PEN:
Line(hdc, last.x, last.y, x, y, fg, 1);
SetPixel(hdc, x, y, fg);
break;
case TOOL_LINE:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
roundTo8Directions(start.x, start.y, x, y);
Line(hdc, start.x, start.y, x, y, fg, toolsModel.GetLineWidth());
break;
case TOOL_BEZIER:
pointSP++;
if (pointSP == 4)
pointSP = 0;
break;
case TOOL_RECT:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
regularize(start.x, start.y, x, y);
Rect(hdc, start.x, start.y, x, y, fg, bg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle());
break;
case TOOL_SHAPE:
imageModel.ResetToPrevious();
pointStack[pointSP].x = x;
pointStack[pointSP].y = y;
if ((pointSP > 0) && (GetAsyncKeyState(VK_SHIFT) < 0))
roundTo8Directions(pointStack[pointSP - 1].x, pointStack[pointSP - 1].y,
pointStack[pointSP].x, pointStack[pointSP].y);
pointSP++;
if (pointSP >= 2)
{
if ((pointStack[0].x - x) * (pointStack[0].x - x) +
(pointStack[0].y - y) * (pointStack[0].y - y) <= toolsModel.GetLineWidth() * toolsModel.GetLineWidth() + 1)
{
Poly(hdc, pointStack, pointSP, fg, bg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle(), TRUE, FALSE);
pointSP = 0;
}
else
{
Poly(hdc, pointStack, pointSP, fg, bg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle(), FALSE, FALSE);
}
}
if (pointSP == 255)
pointSP--;
break;
case TOOL_ELLIPSE:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
regularize(start.x, start.y, x, y);
Ellp(hdc, start.x, start.y, x, y, fg, bg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle());
break;
case TOOL_RRECT:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
regularize(start.x, start.y, x, y);
RRect(hdc, start.x, start.y, x, y, fg, bg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle());
break;
}
}
void
startPaintingR(HDC hdc, LONG x, LONG y, COLORREF fg, COLORREF bg)
{
start.x = x;
start.y = y;
last.x = x;
last.y = y;
switch (toolsModel.GetActiveTool())
{
case TOOL_FREESEL:
case TOOL_TEXT:
case TOOL_LINE:
case TOOL_RECT:
case TOOL_ELLIPSE:
case TOOL_RRECT:
imageModel.CopyPrevious();
break;
case TOOL_RUBBER:
imageModel.CopyPrevious();
Replace(hdc, x, y, x, y, fg, bg, toolsModel.GetRubberRadius());
break;
case TOOL_FILL:
imageModel.CopyPrevious();
Fill(hdc, x, y, bg);
break;
case TOOL_PEN:
imageModel.CopyPrevious();
SetPixel(hdc, x, y, bg);
break;
case TOOL_BRUSH:
imageModel.CopyPrevious();
Brush(hdc, x, y, x, y, bg, toolsModel.GetBrushStyle());
break;
case TOOL_AIRBRUSH:
imageModel.CopyPrevious();
Airbrush(hdc, x, y, bg, toolsModel.GetAirBrushWidth());
break;
case TOOL_BEZIER:
pointStack[pointSP].x = x;
pointStack[pointSP].y = y;
if (pointSP == 0)
{
imageModel.CopyPrevious();
pointSP++;
}
break;
case TOOL_SHAPE:
pointStack[pointSP].x = x;
pointStack[pointSP].y = y;
if (pointSP + 1 >= 2)
Poly(hdc, pointStack, pointSP + 1, bg, fg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle(), FALSE, FALSE);
if (pointSP == 0)
{
imageModel.CopyPrevious();
pointSP++;
}
break;
}
}
void
whilePaintingR(HDC hdc, LONG x, LONG y, COLORREF fg, COLORREF bg)
{
switch (toolsModel.GetActiveTool())
{
case TOOL_RUBBER:
Replace(hdc, last.x, last.y, x, y, fg, bg, toolsModel.GetRubberRadius());
break;
case TOOL_PEN:
Line(hdc, last.x, last.y, x, y, bg, 1);
break;
case TOOL_BRUSH:
Brush(hdc, last.x, last.y, x, y, bg, toolsModel.GetBrushStyle());
break;
case TOOL_AIRBRUSH:
Airbrush(hdc, x, y, bg, toolsModel.GetAirBrushWidth());
break;
case TOOL_LINE:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
roundTo8Directions(start.x, start.y, x, y);
Line(hdc, start.x, start.y, x, y, bg, toolsModel.GetLineWidth());
break;
case TOOL_BEZIER:
imageModel.ResetToPrevious();
pointStack[pointSP].x = x;
pointStack[pointSP].y = y;
switch (pointSP)
{
case 1:
Line(hdc, pointStack[0].x, pointStack[0].y, pointStack[1].x, pointStack[1].y, bg,
toolsModel.GetLineWidth());
break;
case 2:
Bezier(hdc, pointStack[0], pointStack[2], pointStack[2], pointStack[1], bg, toolsModel.GetLineWidth());
break;
case 3:
Bezier(hdc, pointStack[0], pointStack[2], pointStack[3], pointStack[1], bg, toolsModel.GetLineWidth());
break;
}
break;
case TOOL_RECT:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
regularize(start.x, start.y, x, y);
Rect(hdc, start.x, start.y, x, y, bg, fg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle());
break;
case TOOL_SHAPE:
imageModel.ResetToPrevious();
pointStack[pointSP].x = x;
pointStack[pointSP].y = y;
if ((pointSP > 0) && (GetAsyncKeyState(VK_SHIFT) < 0))
roundTo8Directions(pointStack[pointSP - 1].x, pointStack[pointSP - 1].y,
pointStack[pointSP].x, pointStack[pointSP].y);
if (pointSP + 1 >= 2)
Poly(hdc, pointStack, pointSP + 1, bg, fg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle(), FALSE, FALSE);
break;
case TOOL_ELLIPSE:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
regularize(start.x, start.y, x, y);
Ellp(hdc, start.x, start.y, x, y, bg, fg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle());
break;
case TOOL_RRECT:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
regularize(start.x, start.y, x, y);
RRect(hdc, start.x, start.y, x, y, bg, fg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle());
break;
}
last.x = x;
last.y = y;
}
void
endPaintingR(HDC hdc, LONG x, LONG y, COLORREF fg, COLORREF bg)
{
switch (toolsModel.GetActiveTool())
{
case TOOL_RUBBER:
Replace(hdc, last.x, last.y, x, y, fg, bg, toolsModel.GetRubberRadius());
break;
case TOOL_PEN:
Line(hdc, last.x, last.y, x, y, bg, 1);
SetPixel(hdc, x, y, bg);
break;
case TOOL_LINE:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
roundTo8Directions(start.x, start.y, x, y);
Line(hdc, start.x, start.y, x, y, bg, toolsModel.GetLineWidth());
break;
case TOOL_BEZIER:
pointSP++;
if (pointSP == 4)
pointSP = 0;
break;
case TOOL_RECT:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
regularize(start.x, start.y, x, y);
Rect(hdc, start.x, start.y, x, y, bg, fg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle());
break;
case TOOL_SHAPE:
imageModel.ResetToPrevious();
pointStack[pointSP].x = x;
pointStack[pointSP].y = y;
if ((pointSP > 0) && (GetAsyncKeyState(VK_SHIFT) < 0))
roundTo8Directions(pointStack[pointSP - 1].x, pointStack[pointSP - 1].y,
pointStack[pointSP].x, pointStack[pointSP].y);
pointSP++;
if (pointSP >= 2)
{
if ((pointStack[0].x - x) * (pointStack[0].x - x) +
(pointStack[0].y - y) * (pointStack[0].y - y) <= toolsModel.GetLineWidth() * toolsModel.GetLineWidth() + 1)
{
Poly(hdc, pointStack, pointSP, bg, fg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle(), TRUE, FALSE);
pointSP = 0;
}
else
{
Poly(hdc, pointStack, pointSP, bg, fg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle(), FALSE, FALSE);
}
}
if (pointSP == 255)
pointSP--;
break;
case TOOL_ELLIPSE:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
regularize(start.x, start.y, x, y);
Ellp(hdc, start.x, start.y, x, y, bg, fg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle());
break;
case TOOL_RRECT:
imageModel.ResetToPrevious();
if (GetAsyncKeyState(VK_SHIFT) < 0)
regularize(start.x, start.y, x, y);
RRect(hdc, start.x, start.y, x, y, bg, fg, toolsModel.GetLineWidth(), toolsModel.GetShapeStyle());
break;
}
}