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Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK. http://www.xara.com/ =================================XARAHEADEREND============================ */ // The Squash transform Operation /* */ #include "camtypes.h" #include "opsquash.h" //#include "app.h" - in camtypes.h [AUTOMATICALLY REMOVED] //#include "trans2d.h" - in camtypes.h [AUTOMATICALLY REMOVED] //#include "rik.h" #include "selector.h" //#include "docview.h" - in camtypes.h [AUTOMATICALLY REMOVED] //#include "clikdrag.h" DECLARE_SOURCE("$Revision: 1282 $"); // An implement to match the Declare in the .h file. CC_IMPLEMENT_DYNCREATE(OpSquashTrans, TransOperation) // 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 /******************************************************************************************** > OpSquashTrans::OpSquashTrans() Author: Rik_Heywood (Xara Group Ltd) Created: 20/7/93 Purpose: Constructor. Does nothing. ********************************************************************************************/ OpSquashTrans::OpSquashTrans(): TransOperation() { // Reset all the infomation about things SelWidth = SelHeight = 0; // Default to horizontal SquashType = SQUASH_RIGHT; // Set the default scale factors XScale = YScale = FIXED16(1.0); // Set status help StatusHelpID = _R(IDS_SQUASHTRANS_STATUS1); StatusHelpID2 = _R(IDS_SQUASHTRANS_STATUS2); } /******************************************************************************************** > virtual void OpSquashTrans::InitTransformImmediate(OpParam* pOpParam) Author: Rik_Heywood (Xara Group Ltd) Created: 27/7/94 Inputs: pOpParam - The parameters that were passed into the operation Purpose: Sets up the transform ready for an immediate rotation. This is called from DoWithParam() SeeAlso: TransOperation::DoWithParam() ********************************************************************************************/ void OpSquashTrans::InitTransformImmediate(OpParam* pOpParam) { // Depending on the which way we are scaling this object switch (SquashType) { case SQUASH_UP : case SQUASH_DOWN : { // Stretch it vertically XScale = FIXED16(1.0); YScale = *((FIXED16*)PVOID(pOpParam->Param2)); break; } case SQUASH_LEFT : case SQUASH_RIGHT : { // Stretch it horizintally XScale = *((FIXED16*)PVOID(pOpParam->Param2)); YScale = FIXED16(1.0); break; } } } /******************************************************************************************** > void OpSquashTrans::SetStartBlob(INT32 StartBlob) Author: Rik_Heywood (Xara Group Ltd) Created: 25/7/94 Inputs: StartBlob - the Number of the blob that the operation was initiated on, if applicabale. They are numbered as follows :- MonoOn 1 2 3 4 5 6 7 8 MonoOff All operations that were not started from one of the 8 blobs should use 0 Purpose: Allows the operations to know how it was started. This operation is interested in the horizontal / vertical nature of the transform ********************************************************************************************/ void OpSquashTrans::SetStartBlob(INT32 StartBlob) { switch (StartBlob) { case 2: SquashType = SQUASH_UP; break; case 4: SquashType = SQUASH_LEFT; break; case 5: SquashType = SQUASH_RIGHT; break; case 7: SquashType = SQUASH_DOWN; break; default: ERROR3("OpSquashTrans started from a blob that it should not have done"); break; } } /******************************************************************************************** > virtual void OpSquashTrans::InitTransformOnDrag(DocCoord PointerPos, ClickModifiers ClickMods) Author: Rik_Heywood (Xara Group Ltd) Created: 19/7/94 Inputs: PointerPos - The position of the mouse at the start of the drag ClickMods - the keyboard modifiers that were active at the start of the drag Purpose: Sets up the parameters needed to build the transform matrix at the start of the drag. This base class version of this function does nothing. ********************************************************************************************/ void OpSquashTrans::InitTransformOnDrag(DocCoord PointerPos, ClickModifiers ClickMods) { // Make a note of the latest position of the mouse LastPos = PointerPos; // At the start of the drag the Squash factor will always by none XScale = FIXED16(1); YScale = FIXED16(1); // Use the Width and Height of the object AS PASSED IN from the caller // (If we just use the width/height of the selection, we may get it all horribly wrong, as // they may want to scale with or without including the effects of attributes, which // can significantly affect the size of the bounding rectangle to be used) SelWidth = BoundingData.Width; SelHeight = BoundingData.Height; } /******************************************************************************************** > virtual void OpSquashTrans::UpdateTransformOnDrag(DocCoord PointerPos, Spread*, ClickModifiers&) Author: Rik_Heywood (Xara Group Ltd) Created: 19/7/94 Inputs: PointerPos - The latest position of the mouse Spread the mouse is over - not used Clickmodifiers in place - not used Purpose: Does the calculations needed when the mouse moves to keep all the params needed to build the rotation matrix up to date. Note by Phil: This algorithm needs four cases because the scale factors involved must be positive whether dragging the left or right handle. It should only go negative when the pointer crosses a line through the transform origin. ********************************************************************************************/ void OpSquashTrans::UpdateTransformOnDrag(DocCoord PointerPos, Spread* pClickSpread, ClickModifiers& ClickMods) { // Make sure that the cursor does not wrap around at the edge of spreads if (pClickSpread != StartSpread) PointerPos = MakeRelativeToSpread(StartSpread, pClickSpread, PointerPos); // Apply snapping to the pointer pos if (!ClickMods.Constrain) DocView::SnapSelected(pClickSpread, &PointerPos, FALSE, TRUE); // Make a note of the latest position of the mouse LastPos = PointerPos; INT32 Offset; // copy the height anf width params so that we can party on them INT32 WorkingHeight = SelHeight; INT32 WorkingWidth = SelWidth; // if Adjust is being used, adjust the height and width so that scaling still works if (ClickMods.Adjust) { WorkingHeight /= 2; WorkingWidth /= 2; } // Avoid fp div zero bugs. if (WorkingHeight == 0) WorkingHeight = 1; if (WorkingWidth == 0) WorkingWidth = 1; // Work out the shear factor switch (SquashType) { case SQUASH_UP: Offset = LastPos.y - CentreOfTrans.y; YScale = FIXED16( (double)Offset / (double)WorkingHeight); break; case SQUASH_LEFT: Offset = CentreOfTrans.x - LastPos.x; XScale = FIXED16( (double)Offset / (double)WorkingWidth); break; case SQUASH_RIGHT: Offset = LastPos.x - CentreOfTrans.x; XScale = FIXED16( (double)Offset / (double)WorkingWidth); break; case SQUASH_DOWN: Offset = CentreOfTrans.y - LastPos.y; YScale = FIXED16( (double)Offset / (double)WorkingHeight); break; } // Deal with Constrain... // This has to be done in here and not in the ConstrainDrag function because it has to // modify the scale factors computed by the switch statement above. if (ClickMods.Constrain) { // Constrained squash forces scale to whole number multiple of original size... FIXED16 Sign; Sign = (XScale<0 ? -1 : 1); // Compute sign of pure scale XScale+=FIXED16((double)0.5); // Round scale to nearest integer XScale = XScale.MakeShort(); if (XScale==0) XScale = Sign; // Prevent scale from being zero by setting // it to +/- 1 depending on sign of pure scale. Sign = (YScale<0 ? -1 : 1); YScale+=FIXED16((double)0.5); YScale = YScale.MakeShort(); if (YScale==0) YScale = Sign; } BoundingData.XScale = XScale; BoundingData.YScale = YScale; BoundingData.ScaleChanged = TRUE; // See also, UpdateTransformBoundingData below! } /******************************************************************************************** > void OpSquashTrans::BuildMatrix() Author: Rik_Heywood (Xara Group Ltd) Created: 19/7/94 Purpose: Builds the transform matrix required to Shear the selection about the point CentreOfRot ********************************************************************************************/ void OpSquashTrans::BuildMatrix() { // Translate to the origin Transform = Matrix(-CentreOfTrans.x, -CentreOfTrans.y); // We will need a matrix to put the Scale in Matrix Squash(XScale, YScale); // translate back again Matrix TransFromOrigin(CentreOfTrans.x, CentreOfTrans.y); // Combine the 3 of them into a single matrix Transform *= Squash; Transform *= TransFromOrigin; } /******************************************************************************************** > BOOL OpSquashTrans::Declare() Author: Rik_Heywood (Xara Group Ltd) Created: 5/7/93 Returns: TRUE if all went OK, False otherwise Purpose: Adds the operation to the list of all known operations ********************************************************************************************/ BOOL OpSquashTrans::Declare() { return (RegisterOpDescriptor( 0, _R(IDS_SQUASHTRANS), CC_RUNTIME_CLASS(OpSquashTrans), OPTOKEN_SQUASH, TransOperation::GetState)); } /******************************************************************************************** > void OpSquashTrans::UpdateTransformBoundingData() Author: Phil_Martin (Xara Group Ltd) Created: 04/9/94 Purpose: Override the base class version of this fn to ensure that new bounds are calculated and placed in the BoundingData structure. ********************************************************************************************/ void OpSquashTrans::UpdateTransformBoundingData() { #ifndef STANDALONE if (pSelTool != NULL) { ComputeNewBounds(); // Tell the tool about the current transform bounding data pSelTool->DragMove(&BoundingData); } #endif }