+++ /dev/null
-/*
- * COPYRIGHT: GNU GPL, See COPYING in the top level directory
- * PROJECT: ReactOS kernel
- * PURPOSE: Coordinate systems
- * FILE: subsystems/win32/win32k/objects/coord.c
- * PROGRAMER: Timo Kreuzer (timo.kreuzer@rectos.org)
- */
-
-/* Coordinate translation overview
- * -------------------------------
- *
- * Windows uses 3 different coordinate systems, referred to as world space,
- * page space and device space.
- *
- * Device space:
- * This is the coordinate system of the physical device that displays the
- * graphics. One unit matches one pixel of the surface. The coordinate system
- * is always orthogonal.
- *
- * Page space:
- * This is the coordinate system on the screen or on the paper layout for
- * printer devices. The coordinate system is also orthogonal but one unit
- * does not neccesarily match one pixel. Instead there are different mapping
- * modes that can be set using SetMapMode() that specify how page space units
- * are transformed into device space units. These mapping modes are:
- * - MM_TEXT: One unit matches one unit in device space (one pixel)
- * - MM_TWIPS One unit matches 1/20 point (1/1440 inch)
- * - MM_LOMETRIC: One unit matches 0.1 millimeter
- * - MM_HIMETRIC: One unit matches 0.01 millimeter
- * - MM_LOENGLISH: One unit matches 0.01 inch
- * - MM_HIENGLISH: One unit matches 0.001 inch
- * - MM_ISOTROPIC:
- * - MM_ANISOTROPIC:
- * If the mapping mode is either MM_ISOTROPIC or MM_ANISOTROPIC, the actual
- * transormation is calculated from the window and viewport extension.
- * The window extension can be set using SetWindowExtEx() and describes the
- * extents of an arbitrary window (not to confuse with the gui element!) in
- * page space coordinates.
- * The viewport extension can be set using SetViewportExtEx() and describes
- * the extent of the same window in device space coordinates. If the mapping
- * mode is MM_ISOTROPIC one of the viewport extensions can be adjusted by GDI
- * to make sure the mapping stays isotropic, that is it has the same x/y ratio
- * as the window extension.
- *
- * World space:
- * World space is the coordinate system that is used for all GDI drawing
- * operations. The metrics of this coordinate system depend on the DCs
- * graphics mode, which can be set using SetGraphicsMode().
- * If the graphics mode is GM_COMPATIBLE, world space is identical to page
- * space and no additional transformation is applied.
- * If the graphics mode is GM_ADVANCED, an arbitrary coordinate transformation
- * can be set using SetWorldTransform(), which is applied to transform world
- * space coordinates into page space coordinates.
- *
- * User mode data
- * All coordinate translation data is stored in the dc attribute, so the values
- * might be invalid. This has to be taken into account. Integer values might be
- * zero, so when a division is made, the value has to be read first and then
- * checked! For floating point values (FLOATOBJ as well) these restrictions do
- * not apply, since we cannot get dividy-by-zero exceptions.
- * Though the result might be a completely random and invalid value, if it was
- * messed with in an illegal way in user mode. This is not a problem, since the
- * result of coordinate transformations are never expected to be "valid" values.
- * In the worst case, the drawing operation draws rubbish into the DC.
- */
-
-/* INCLUDES ******************************************************************/
-
-#include <win32k.h>
-
-#define NDEBUG
-#include <debug.h>
-C_ASSERT(sizeof(XFORML) == sizeof(XFORM));
-
-
-/* GLOBALS *******************************************************************/
-
-const MATRIX gmxIdentity =
-{
- FLOATOBJ_1, FLOATOBJ_0,
- FLOATOBJ_0, FLOATOBJ_1,
- FLOATOBJ_0, FLOATOBJ_0,
- 0, 0, XFORM_NO_TRANSLATION|XFORM_FORMAT_LTOL|XFORM_UNITY|XFORM_SCALE
-};
-
-
-/* FUNCTIONS *****************************************************************/
-
-VOID
-FASTCALL
-DC_vFixIsotropicMapping(PDC pdc)
-{
- PDC_ATTR pdcattr;
- LONG64 fx, fy;
- LONG s;
- SIZEL szlWindowExt, szlViewportExt;
- ASSERT(pdc->pdcattr->iMapMode == MM_ISOTROPIC);
-
- /* Get a pointer to the DC_ATTR */
- pdcattr = pdc->pdcattr;
-
- /* Read the extents, we rely on non-null values */
- szlWindowExt = pdcattr->szlWindowExt;
- szlViewportExt = pdcattr->szlViewportExt;
-
- /* Check if all values are valid */
- if ((szlWindowExt.cx == 0) || (szlWindowExt.cy == 0) ||
- (szlViewportExt.cx == 0) || (szlViewportExt.cy == 0))
- {
- /* Someone put rubbish into the fields, just ignore it. */
- return;
- }
-
- fx = abs((LONG64)szlWindowExt.cx * szlViewportExt.cy);
- fy = abs((LONG64)szlWindowExt.cy * szlViewportExt.cx);
-
- if (fx < fy)
- {
- s = (szlWindowExt.cy ^ szlViewportExt.cx) > 0 ? 1 : -1;
- pdcattr->szlViewportExt.cx = (LONG)(fx * s / szlWindowExt.cy);
- }
- else if (fx > fy)
- {
- s = (szlWindowExt.cx ^ szlViewportExt.cy) > 0 ? 1 : -1;
- pdcattr->szlViewportExt.cy = (LONG)(fy * s / szlWindowExt.cx);
- }
-
- /* Reset the flag */
- pdc->pdcattr->flXform &= ~PAGE_EXTENTS_CHANGED;
-}
-
-VOID
-FASTCALL
-DC_vGetPageToDevice(PDC pdc, MATRIX *pmx)
-{
- PDC_ATTR pdcattr = pdc->pdcattr;
- PSIZEL pszlViewPortExt;
-
- /* Get the viewport extension */
- pszlViewPortExt = DC_pszlViewportExt(pdc);
-
- /* No shearing / rotation */
- FLOATOBJ_SetLong(&pmx->efM12, 0);
- FLOATOBJ_SetLong(&pmx->efM21, 0);
-
- /* Calculate scaling */
- if (pdcattr->szlWindowExt.cx != 0)
- {
- FLOATOBJ_SetLong(&pmx->efM11, pszlViewPortExt->cx);
- FLOATOBJ_DivLong(&pmx->efM11, pdcattr->szlWindowExt.cx);
- }
- else
- FLOATOBJ_SetLong(&pmx->efM11, 1);
-
- if (pdcattr->szlWindowExt.cy != 0)
- {
- FLOATOBJ_SetLong(&pmx->efM22, pszlViewPortExt->cy);
- FLOATOBJ_DivLong(&pmx->efM22, pdcattr->szlWindowExt.cy);
- }
- else
- FLOATOBJ_SetLong(&pmx->efM22, 1);
-
- /* Calculate x offset */
- FLOATOBJ_SetLong(&pmx->efDx, -pdcattr->ptlWindowOrg.x);
- FLOATOBJ_Mul(&pmx->efDx, &pmx->efM11);
- FLOATOBJ_AddLong(&pmx->efDx, pdcattr->ptlViewportOrg.x);
-
- /* Calculate y offset */
- FLOATOBJ_SetLong(&pmx->efDy, -pdcattr->ptlWindowOrg.y);
- FLOATOBJ_Mul(&pmx->efDy, &pmx->efM22);
- FLOATOBJ_AddLong(&pmx->efDy, pdcattr->ptlViewportOrg.y);
-}
-
-VOID
-FASTCALL
-DC_vUpdateWorldToDevice(PDC pdc)
-{
- XFORMOBJ xoPageToDevice, xoWorldToPage, xoWorldToDevice;
- MATRIX mxPageToDevice;
-
- // FIXME: make sure world-to-page is valid!
-
- /* Construct a transformation to do the page-to-device conversion */
- DC_vGetPageToDevice(pdc, &mxPageToDevice);
- XFORMOBJ_vInit(&xoPageToDevice, &mxPageToDevice);
-
- /* Recalculate the world-to-device xform */
- XFORMOBJ_vInit(&xoWorldToPage, &pdc->pdcattr->mxWorldToPage);
- XFORMOBJ_vInit(&xoWorldToDevice, &pdc->pdcattr->mxWorldToDevice);
- XFORMOBJ_iCombine(&xoWorldToDevice, &xoWorldToPage, &xoPageToDevice);
-
- /* Reset the flags */
- pdc->pdcattr->flXform &= ~(PAGE_XLATE_CHANGED|PAGE_EXTENTS_CHANGED|WORLD_XFORM_CHANGED);
-}
-
-VOID
-FASTCALL
-DC_vUpdateDeviceToWorld(PDC pdc)
-{
- XFORMOBJ xoWorldToDevice, xoDeviceToWorld;
- PMATRIX pmxWorldToDevice;
-
- /* Get the world-to-device translation */
- pmxWorldToDevice = DC_pmxWorldToDevice(pdc);
- XFORMOBJ_vInit(&xoWorldToDevice, pmxWorldToDevice);
-
- /* Create inverse of world-to-device transformation */
- XFORMOBJ_vInit(&xoDeviceToWorld, &pdc->pdcattr->mxDeviceToWorld);
- if (XFORMOBJ_iInverse(&xoDeviceToWorld, &xoWorldToDevice) == DDI_ERROR)
- {
- // FIXME: do we need to reset anything?
- return;
- }
-
- /* Reset the flag */
- pdc->pdcattr->flXform &= ~DEVICE_TO_WORLD_INVALID;
-}
-
-BOOL
-NTAPI
-GreCombineTransform(
- XFORML *pxformDest,
- XFORML *pxform1,
- XFORML *pxform2)
-{
- MATRIX mxDest, mx1, mx2;
- XFORMOBJ xoDest, xo1, xo2;
-
- /* Check for illegal parameters */
- if (!pxformDest || !pxform1 || !pxform2) return FALSE;
-
- /* Initialize XFORMOBJs */
- XFORMOBJ_vInit(&xoDest, &mxDest);
- XFORMOBJ_vInit(&xo1, &mx1);
- XFORMOBJ_vInit(&xo2, &mx2);
-
- /* Convert the XFORMLs into XFORMOBJs */
- XFORMOBJ_iSetXform(&xo1, pxform1);
- XFORMOBJ_iSetXform(&xo2, pxform2);
-
- /* Combine them */
- XFORMOBJ_iCombine(&xoDest, &xo1, &xo2);
-
- /* Translate back into XFORML */
- XFORMOBJ_iGetXform(&xoDest, pxformDest);
-
- return TRUE;
-}
-
-BOOL
-APIENTRY
-NtGdiCombineTransform(
- LPXFORM UnsafeXFormResult,
- LPXFORM Unsafexform1,
- LPXFORM Unsafexform2)
-{
- BOOL Ret;
-
- _SEH2_TRY
- {
- ProbeForWrite(UnsafeXFormResult, sizeof(XFORM), 1);
- ProbeForRead(Unsafexform1, sizeof(XFORM), 1);
- ProbeForRead(Unsafexform2, sizeof(XFORM), 1);
- Ret = GreCombineTransform((XFORML*)UnsafeXFormResult,
- (XFORML*)Unsafexform1,
- (XFORML*)Unsafexform2);
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- Ret = FALSE;
- }
- _SEH2_END;
-
- return Ret;
-}
-
-// FIXME: Should be XFORML and use XFORMOBJ functions directly
-BOOL
-APIENTRY
-NtGdiGetTransform(
- HDC hdc,
- DWORD iXform,
- LPXFORM pXForm)
-{
- PDC pdc;
- BOOL ret = TRUE;
- MATRIX mxPageToDevice;
- XFORMOBJ xo;
- PMATRIX pmx;
-
- if (!pXForm)
- {
- EngSetLastError(ERROR_INVALID_PARAMETER);
- return FALSE;
- }
-
- pdc = DC_LockDc(hdc);
- if (!pdc)
- {
- EngSetLastError(ERROR_INVALID_HANDLE);
- return FALSE;
- }
-
- switch (iXform)
- {
- case GdiWorldSpaceToPageSpace:
- pmx = DC_pmxWorldToPage(pdc);
- break;
-
- case GdiWorldSpaceToDeviceSpace:
- pmx = DC_pmxWorldToDevice(pdc);
- break;
-
- case GdiDeviceSpaceToWorldSpace:
- pmx = DC_pmxDeviceToWorld(pdc);
- break;
-
- case GdiPageSpaceToDeviceSpace:
- DC_vGetPageToDevice(pdc, &mxPageToDevice);
- pmx = &mxPageToDevice;
- break;
-
- default:
- DPRINT1("Unknown transform %lu\n", iXform);
- ret = FALSE;
- goto leave;
- }
-
- /* Initialize an XFORMOBJ */
- XFORMOBJ_vInit(&xo, pmx);
-
- _SEH2_TRY
- {
- ProbeForWrite(pXForm, sizeof(XFORML), 1);
- XFORMOBJ_iGetXform(&xo, (XFORML*)pXForm);
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- ret = FALSE;
- }
- _SEH2_END;
-
-leave:
- DC_UnlockDc(pdc);
- return ret;
-}
-
-
-/*!
- * Converts points from logical coordinates into device coordinates.
- * Conversion depends on the mapping mode,
- * world transfrom, viewport origin settings for the given device context.
- * \param hDC device context.
- * \param Points an array of POINT structures (in/out).
- * \param Count number of elements in the array of POINT structures.
- * \return TRUE if success, FALSE otherwise.
-*/
-BOOL
-APIENTRY
-NtGdiTransformPoints(
- HDC hDC,
- PPOINT UnsafePtsIn,
- PPOINT UnsafePtOut,
- INT Count,
- INT iMode)
-{
- PDC pdc;
- LPPOINT Points;
- ULONG Size;
- BOOL ret = TRUE;
-
- if (Count <= 0)
- return TRUE;
-
- pdc = DC_LockDc(hDC);
- if (!pdc)
- {
- EngSetLastError(ERROR_INVALID_PARAMETER);
- return FALSE;
- }
-
- Size = Count * sizeof(POINT);
-
- // FIXME: It would be wise to have a small stack buffer as optimization
- Points = ExAllocatePoolWithTag(PagedPool, Size, GDITAG_TEMP);
- if (!Points)
- {
- DC_UnlockDc(pdc);
- EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
- return FALSE;
- }
-
- _SEH2_TRY
- {
- ProbeForWrite(UnsafePtOut, Size, 1);
- ProbeForRead(UnsafePtsIn, Size, 1);
- RtlCopyMemory(Points, UnsafePtsIn, Size);
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- /* Do not set last error */
- _SEH2_YIELD(goto leave;)
- }
- _SEH2_END;
-
- switch (iMode)
- {
- case GdiDpToLp:
- DC_vXformDeviceToWorld(pdc, Count, Points, Points);
- break;
-
- case GdiLpToDp:
- DC_vXformWorldToDevice(pdc, Count, Points, Points);
- break;
-
- case 2: // Not supported yet. Need testing.
- default:
- {
- EngSetLastError(ERROR_INVALID_PARAMETER);
- ret = FALSE;
- goto leave;
- }
- }
-
- _SEH2_TRY
- {
- /* Pointer was already probed! */
- RtlCopyMemory(UnsafePtOut, Points, Size);
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- /* Do not set last error */
- }
- _SEH2_END;
-
-//
-// If we are getting called that means User XForms is a mess!
-//
-leave:
- DC_UnlockDc(pdc);
- ExFreePoolWithTag(Points, GDITAG_TEMP);
- return ret;
-}
-
-BOOL
-NTAPI
-GreModifyWorldTransform(
- PDC pdc,
- const XFORML *pxform,
- DWORD dwMode)
-{
- MATRIX mxSrc;
- XFORMOBJ xoSrc, xoDC;
-
- switch (dwMode)
- {
- case MWT_IDENTITY:
- pdc->pdcattr->mxWorldToPage = gmxIdentity;
- break;
-
- case MWT_LEFTMULTIPLY:
- XFORMOBJ_vInit(&xoDC, &pdc->pdcattr->mxWorldToPage);
- XFORMOBJ_vInit(&xoSrc, &mxSrc);
- XFORMOBJ_iSetXform(&xoSrc, pxform);
- XFORMOBJ_iCombine(&xoDC, &xoSrc, &xoDC);
- break;
-
- case MWT_RIGHTMULTIPLY:
- XFORMOBJ_vInit(&xoDC, &pdc->pdcattr->mxWorldToPage);
- XFORMOBJ_vInit(&xoSrc, &mxSrc);
- XFORMOBJ_iSetXform(&xoSrc, pxform);
- XFORMOBJ_iCombine(&xoDC, &xoDC, &xoSrc);
- break;
-
- case MWT_MAX+1: // Must be MWT_SET????
- XFORMOBJ_vInit(&xoDC, &pdc->pdcattr->mxWorldToPage);
- XFORMOBJ_iSetXform(&xoDC, pxform);
- break;
-
- default:
- return FALSE;
- }
-
- /*Set invalidation flags */
- pdc->pdcattr->flXform |= WORLD_XFORM_CHANGED|DEVICE_TO_WORLD_INVALID;
-
- return TRUE;
-}
-
-BOOL
-APIENTRY
-NtGdiModifyWorldTransform(
- HDC hdc,
- LPXFORM pxformUnsafe,
- DWORD dwMode)
-{
- PDC pdc;
- XFORML xformSafe;
- BOOL Ret = TRUE;
-
- pdc = DC_LockDc(hdc);
- if (!pdc)
- {
- EngSetLastError(ERROR_INVALID_HANDLE);
- return FALSE;
- }
-
- /* The xform is permitted to be NULL for MWT_IDENTITY.
- * However, if it is not NULL, then it must be valid even
- * though it is not used. */
- if (pxformUnsafe != NULL || dwMode != MWT_IDENTITY)
- {
- _SEH2_TRY
- {
- ProbeForRead(pxformUnsafe, sizeof(XFORML), 1);
- RtlCopyMemory(&xformSafe, pxformUnsafe, sizeof(XFORML));
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- Ret = FALSE;
- }
- _SEH2_END;
- }
-
- /* Safe to handle kernel mode data. */
- if (Ret) Ret = GreModifyWorldTransform(pdc, &xformSafe, dwMode);
- DC_UnlockDc(pdc);
- return Ret;
-}
-
-BOOL
-APIENTRY
-NtGdiOffsetViewportOrgEx(
- HDC hDC,
- int XOffset,
- int YOffset,
- LPPOINT UnsafePoint)
-{
- PDC dc;
- PDC_ATTR pdcattr;
- NTSTATUS Status = STATUS_SUCCESS;
-
- dc = DC_LockDc(hDC);
- if (!dc)
- {
- EngSetLastError(ERROR_INVALID_HANDLE);
- return FALSE;
- }
- pdcattr = dc->pdcattr;
-
- if (UnsafePoint)
- {
- _SEH2_TRY
- {
- ProbeForWrite(UnsafePoint, sizeof(POINT), 1);
- UnsafePoint->x = pdcattr->ptlViewportOrg.x;
- UnsafePoint->y = pdcattr->ptlViewportOrg.y;
- if (pdcattr->dwLayout & LAYOUT_RTL)
- {
- UnsafePoint->x = -UnsafePoint->x;
- }
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- Status = _SEH2_GetExceptionCode();
- }
- _SEH2_END;
-
- if (!NT_SUCCESS(Status))
- {
- SetLastNtError(Status);
- DC_UnlockDc(dc);
- return FALSE;
- }
- }
-
- if (pdcattr->dwLayout & LAYOUT_RTL)
- {
- XOffset = -XOffset;
- }
- pdcattr->ptlViewportOrg.x += XOffset;
- pdcattr->ptlViewportOrg.y += YOffset;
- pdcattr->flXform |= PAGE_XLATE_CHANGED;
-
- DC_UnlockDc(dc);
-
- return TRUE;
-}
-
-BOOL
-APIENTRY
-NtGdiOffsetWindowOrgEx(
- HDC hDC,
- int XOffset,
- int YOffset,
- LPPOINT Point)
-{
- PDC dc;
- PDC_ATTR pdcattr;
-
- dc = DC_LockDc(hDC);
- if (!dc)
- {
- EngSetLastError(ERROR_INVALID_HANDLE);
- return FALSE;
- }
- pdcattr = dc->pdcattr;
-
- if (Point)
- {
- NTSTATUS Status = STATUS_SUCCESS;
-
- _SEH2_TRY
- {
- ProbeForWrite(Point, sizeof(POINT), 1);
- Point->x = pdcattr->ptlWindowOrg.x;
- Point->y = pdcattr->ptlWindowOrg.y;
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- Status = _SEH2_GetExceptionCode();
- }
- _SEH2_END;
-
- if (!NT_SUCCESS(Status))
- {
- SetLastNtError(Status);
- DC_UnlockDc(dc);
- return FALSE;
- }
- }
-
- pdcattr->ptlWindowOrg.x += XOffset;
- pdcattr->ptlWindowOrg.y += YOffset;
- pdcattr->flXform |= PAGE_XLATE_CHANGED;
-
- DC_UnlockDc(dc);
-
- return TRUE;
-}
-
-BOOL
-APIENTRY
-NtGdiScaleViewportExtEx(
- HDC hDC,
- int Xnum,
- int Xdenom,
- int Ynum,
- int Ydenom,
- LPSIZE pSize)
-{
- PDC pDC;
- PDC_ATTR pdcattr;
- BOOL Ret = FALSE;
- LONG X, Y;
-
- pDC = DC_LockDc(hDC);
- if (!pDC)
- {
- EngSetLastError(ERROR_INVALID_HANDLE);
- return FALSE;
- }
- pdcattr = pDC->pdcattr;
-
- if (pdcattr->iMapMode > MM_TWIPS)
- {
- if (Xdenom && Ydenom)
- {
- DC_pszlViewportExt(pDC);
- X = Xnum * pdcattr->szlViewportExt.cx / Xdenom;
- if (X)
- {
- Y = Ynum * pdcattr->szlViewportExt.cy / Ydenom;
- if (Y)
- {
- pdcattr->szlViewportExt.cx = X;
- pdcattr->szlViewportExt.cy = Y;
- pdcattr->flXform |= PAGE_XLATE_CHANGED;
-
- IntMirrorWindowOrg(pDC);
-
- pdcattr->flXform |= (PAGE_EXTENTS_CHANGED |
- INVALIDATE_ATTRIBUTES |
- DEVICE_TO_WORLD_INVALID);
-
- if (pdcattr->iMapMode == MM_ISOTROPIC)
- {
- DC_vFixIsotropicMapping(pDC);
- }
-
- Ret = TRUE;
- }
- }
- }
- }
- else
- Ret = TRUE;
-
- if (pSize)
- {
- _SEH2_TRY
- {
- ProbeForWrite(pSize, sizeof(SIZE), 1);
-
- pSize->cx = pdcattr->szlViewportExt.cx;
- pSize->cy = pdcattr->szlViewportExt.cy;
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- SetLastNtError(_SEH2_GetExceptionCode());
- Ret = FALSE;
- }
- _SEH2_END;
- }
-
- DC_UnlockDc(pDC);
- return Ret;
-}
-
-BOOL
-APIENTRY
-NtGdiScaleWindowExtEx(
- HDC hDC,
- int Xnum,
- int Xdenom,
- int Ynum,
- int Ydenom,
- LPSIZE pSize)
-{
- PDC pDC;
- PDC_ATTR pdcattr;
- BOOL Ret = FALSE;
- LONG X, Y;
-
- pDC = DC_LockDc(hDC);
- if (!pDC)
- {
- EngSetLastError(ERROR_INVALID_HANDLE);
- return FALSE;
- }
- pdcattr = pDC->pdcattr;
-
- if (pSize)
- {
- NTSTATUS Status = STATUS_SUCCESS;
-
- _SEH2_TRY
- {
- ProbeForWrite(pSize, sizeof(SIZE), 1);
-
- X = pdcattr->szlWindowExt.cx;
- if (pdcattr->dwLayout & LAYOUT_RTL) X = -X;
- pSize->cx = X;
- pSize->cy = pdcattr->szlWindowExt.cy;
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- Status = _SEH2_GetExceptionCode();
- }
- _SEH2_END;
-
- if (!NT_SUCCESS(Status))
- {
- SetLastNtError(Status);
- DC_UnlockDc(pDC);
- return FALSE;
- }
- }
-
- if (pdcattr->iMapMode > MM_TWIPS)
- {
- if (Xdenom && Ydenom)
- {
- X = Xnum * pdcattr->szlWindowExt.cx / Xdenom;
- if (X)
- {
- Y = Ynum * pdcattr->szlWindowExt.cy / Ydenom;
- if (Y)
- {
- pdcattr->szlWindowExt.cx = X;
- pdcattr->szlWindowExt.cy = Y;
-
- IntMirrorWindowOrg(pDC);
-
- pdcattr->flXform |= (PAGE_EXTENTS_CHANGED|INVALIDATE_ATTRIBUTES|DEVICE_TO_WORLD_INVALID);
-
- Ret = TRUE;
- }
- }
- }
- }
- else
- Ret = TRUE;
-
- DC_UnlockDc(pDC);
- return Ret;
-}
-
-int
-APIENTRY
-IntGdiSetMapMode(
- PDC dc,
- int MapMode)
-{
- int PrevMapMode;
- PDC_ATTR pdcattr = dc->pdcattr;
-
- PrevMapMode = pdcattr->iMapMode;
-
- pdcattr->iMapMode = MapMode;
- pdcattr->flXform &= ~(ISO_OR_ANISO_MAP_MODE|PTOD_EFM22_NEGATIVE|
- PTOD_EFM11_NEGATIVE|POSITIVE_Y_IS_UP|PAGE_TO_DEVICE_SCALE_IDENTITY|
- PAGE_TO_DEVICE_IDENTITY);
-
- switch (MapMode)
- {
- case MM_TEXT:
- pdcattr->szlWindowExt.cx = 1;
- pdcattr->szlWindowExt.cy = 1;
- pdcattr->szlViewportExt.cx = 1;
- pdcattr->szlViewportExt.cy = 1;
- pdcattr->flXform |= PAGE_TO_DEVICE_SCALE_IDENTITY;
- break;
-
- case MM_ISOTROPIC:
- pdcattr->flXform |= ISO_OR_ANISO_MAP_MODE;
- /* Fall through */
-
- case MM_LOMETRIC:
- pdcattr->szlWindowExt.cx = pdcattr->szlVirtualDeviceMm.cx * 10;
- pdcattr->szlWindowExt.cy = pdcattr->szlVirtualDeviceMm.cy * 10;
- pdcattr->szlViewportExt.cx = pdcattr->szlVirtualDevicePixel.cx;
- pdcattr->szlViewportExt.cy = -pdcattr->szlVirtualDevicePixel.cy;
- break;
-
- case MM_HIMETRIC:
- pdcattr->szlWindowExt.cx = pdcattr->szlVirtualDeviceMm.cx * 100;
- pdcattr->szlWindowExt.cy = pdcattr->szlVirtualDeviceMm.cy * 100;
- pdcattr->szlViewportExt.cx = pdcattr->szlVirtualDevicePixel.cx;
- pdcattr->szlViewportExt.cy = -pdcattr->szlVirtualDevicePixel.cy;
- break;
-
- case MM_LOENGLISH:
- pdcattr->szlWindowExt.cx = MulDiv(1000, pdcattr->szlVirtualDeviceMm.cx, 254);
- pdcattr->szlWindowExt.cy = MulDiv(1000, pdcattr->szlVirtualDeviceMm.cy, 254);
- pdcattr->szlViewportExt.cx = pdcattr->szlVirtualDevicePixel.cx;
- pdcattr->szlViewportExt.cy = -pdcattr->szlVirtualDevicePixel.cy;
- break;
-
- case MM_HIENGLISH:
- pdcattr->szlWindowExt.cx = MulDiv(10000, pdcattr->szlVirtualDeviceMm.cx, 254);
- pdcattr->szlWindowExt.cy = MulDiv(10000, pdcattr->szlVirtualDeviceMm.cy, 254);
- pdcattr->szlViewportExt.cx = pdcattr->szlVirtualDevicePixel.cx;
- pdcattr->szlViewportExt.cy = -pdcattr->szlVirtualDevicePixel.cy;
- break;
-
- case MM_TWIPS:
- pdcattr->szlWindowExt.cx = MulDiv(14400, pdcattr->szlVirtualDeviceMm.cx, 254);
- pdcattr->szlWindowExt.cy = MulDiv(14400, pdcattr->szlVirtualDeviceMm.cy, 254);
- pdcattr->szlViewportExt.cx = pdcattr->szlVirtualDevicePixel.cx;
- pdcattr->szlViewportExt.cy = -pdcattr->szlVirtualDevicePixel.cy;
- break;
-
- case MM_ANISOTROPIC:
- pdcattr->flXform &= ~(PAGE_TO_DEVICE_IDENTITY|POSITIVE_Y_IS_UP);
- pdcattr->flXform |= ISO_OR_ANISO_MAP_MODE;
- break;
-
- default:
- pdcattr->iMapMode = PrevMapMode;
- PrevMapMode = 0;
- }
-
- pdcattr->flXform |= (PAGE_XLATE_CHANGED|PAGE_EXTENTS_CHANGED|
- INVALIDATE_ATTRIBUTES|DEVICE_TO_PAGE_INVALID|DEVICE_TO_WORLD_INVALID);
-
- return PrevMapMode;
-}
-
-
-BOOL
-APIENTRY
-NtGdiSetViewportOrgEx(
- HDC hDC,
- int X,
- int Y,
- LPPOINT Point)
-{
- PDC dc;
- PDC_ATTR pdcattr;
-
- dc = DC_LockDc(hDC);
- if (!dc)
- {
- EngSetLastError(ERROR_INVALID_HANDLE);
- return FALSE;
- }
- pdcattr = dc->pdcattr;
-
- if (Point)
- {
- NTSTATUS Status = STATUS_SUCCESS;
-
- _SEH2_TRY
- {
- ProbeForWrite(Point, sizeof(POINT), 1);
- Point->x = pdcattr->ptlViewportOrg.x;
- Point->y = pdcattr->ptlViewportOrg.y;
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- Status = _SEH2_GetExceptionCode();
- }
- _SEH2_END;
-
- if (!NT_SUCCESS(Status))
- {
- SetLastNtError(Status);
- DC_UnlockDc(dc);
- return FALSE;
- }
- }
-
- pdcattr->ptlViewportOrg.x = X;
- pdcattr->ptlViewportOrg.y = Y;
- pdcattr->flXform |= PAGE_XLATE_CHANGED;
-
- DC_UnlockDc(dc);
-
- return TRUE;
-}
-
-BOOL
-APIENTRY
-NtGdiSetWindowOrgEx(
- HDC hDC,
- int X,
- int Y,
- LPPOINT Point)
-{
- PDC dc;
- PDC_ATTR pdcattr;
-
- dc = DC_LockDc(hDC);
- if (!dc)
- {
- EngSetLastError(ERROR_INVALID_HANDLE);
- return FALSE;
- }
- pdcattr = dc->pdcattr;
-
- if (Point)
- {
- NTSTATUS Status = STATUS_SUCCESS;
-
- _SEH2_TRY
- {
- ProbeForWrite(Point, sizeof(POINT), 1);
- Point->x = pdcattr->ptlWindowOrg.x;
- Point->y = pdcattr->ptlWindowOrg.y;
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- Status = _SEH2_GetExceptionCode();
- }
- _SEH2_END;
-
- if (!NT_SUCCESS(Status))
- {
- SetLastNtError(Status);
- DC_UnlockDc(dc);
- return FALSE;
- }
- }
-
- pdcattr->ptlWindowOrg.x = X;
- pdcattr->ptlWindowOrg.y = Y;
- pdcattr->flXform |= PAGE_XLATE_CHANGED;
-
- DC_UnlockDc(dc);
-
- return TRUE;
-}
-
-//
-// Mirror Window function.
-//
-VOID
-FASTCALL
-IntMirrorWindowOrg(PDC dc)
-{
- PDC_ATTR pdcattr;
- LONG X;
-
- pdcattr = dc->pdcattr;
-
- if (!(pdcattr->dwLayout & LAYOUT_RTL))
- {
- pdcattr->ptlWindowOrg.x = pdcattr->lWindowOrgx; // Flip it back.
- return;
- }
- if (!pdcattr->szlViewportExt.cx) return;
- //
- // WOrgx = wox - (Width - 1) * WExtx / VExtx
- //
- X = (dc->erclWindow.right - dc->erclWindow.left) - 1; // Get device width - 1
-
- X = (X * pdcattr->szlWindowExt.cx) / pdcattr->szlViewportExt.cx;
-
- pdcattr->ptlWindowOrg.x = pdcattr->lWindowOrgx - X; // Now set the inverted win origion.
- pdcattr->flXform |= PAGE_XLATE_CHANGED;
-
- return;
-}
-
-VOID
-NTAPI
-DC_vSetLayout(
- IN PDC pdc,
- IN LONG wox,
- IN DWORD dwLayout)
-{
- PDC_ATTR pdcattr = pdc->pdcattr;
-
- pdcattr->dwLayout = dwLayout;
-
- if (!(dwLayout & LAYOUT_ORIENTATIONMASK)) return;
-
- if (dwLayout & LAYOUT_RTL)
- {
- pdcattr->iMapMode = MM_ANISOTROPIC;
- }
-
- //pdcattr->szlWindowExt.cy = -pdcattr->szlWindowExt.cy;
- //pdcattr->ptlWindowOrg.x = -pdcattr->ptlWindowOrg.x;
-
- //if (wox == -1)
- // IntMirrorWindowOrg(pdc);
- //else
- // pdcattr->ptlWindowOrg.x = wox - pdcattr->ptlWindowOrg.x;
-
- if (!(pdcattr->flTextAlign & TA_CENTER)) pdcattr->flTextAlign |= TA_RIGHT;
-
- if (pdc->dclevel.flPath & DCPATH_CLOCKWISE)
- pdc->dclevel.flPath &= ~DCPATH_CLOCKWISE;
- else
- pdc->dclevel.flPath |= DCPATH_CLOCKWISE;
-
- pdcattr->flXform |= (PAGE_EXTENTS_CHANGED |
- INVALIDATE_ATTRIBUTES |
- DEVICE_TO_WORLD_INVALID);
-
-// DC_UpdateXforms(pdc);
-}
-
-// NtGdiSetLayout
-//
-// The default is left to right. This function changes it to right to left, which
-// is the standard in Arabic and Hebrew cultures.
-//
-/*
- * @implemented
- */
-DWORD
-APIENTRY
-NtGdiSetLayout(
- IN HDC hdc,
- IN LONG wox,
- IN DWORD dwLayout)
-{
- PDC pdc;
- DWORD dwOldLayout;
-
- pdc = DC_LockDc(hdc);
- if (!pdc)
- {
- EngSetLastError(ERROR_INVALID_HANDLE);
- return GDI_ERROR;
- }
-
- dwOldLayout = pdc->pdcattr->dwLayout;
- DC_vSetLayout(pdc, wox, dwLayout);
-
- DC_UnlockDc(pdc);
- return dwOldLayout;
-}
-
-/*
- * @implemented
- */
-LONG
-APIENTRY
-NtGdiGetDeviceWidth(
- IN HDC hdc)
-{
- PDC dc;
- LONG Ret;
- dc = DC_LockDc(hdc);
- if (!dc)
- {
- EngSetLastError(ERROR_INVALID_HANDLE);
- return 0;
- }
- Ret = dc->erclWindow.right - dc->erclWindow.left;
- DC_UnlockDc(dc);
- return Ret;
-}
-
-/*
- * @implemented
- */
-BOOL
-APIENTRY
-NtGdiMirrorWindowOrg(
- IN HDC hdc)
-{
- PDC dc;
- dc = DC_LockDc(hdc);
- if (!dc)
- {
- EngSetLastError(ERROR_INVALID_HANDLE);
- return FALSE;
- }
- IntMirrorWindowOrg(dc);
- DC_UnlockDc(dc);
- return TRUE;
-}
-
-/*
- * @implemented
- */
-BOOL
-APIENTRY
-NtGdiSetSizeDevice(
- IN HDC hdc,
- IN INT cxVirtualDevice,
- IN INT cyVirtualDevice)
-{
- PDC dc;
- PDC_ATTR pdcattr;
-
- if (!cxVirtualDevice || !cyVirtualDevice)
- {
- return FALSE;
- }
-
- dc = DC_LockDc(hdc);
- if (!dc) return FALSE;
-
- pdcattr = dc->pdcattr;
-
- pdcattr->szlVirtualDeviceSize.cx = cxVirtualDevice;
- pdcattr->szlVirtualDeviceSize.cy = cyVirtualDevice;
-
- DC_UnlockDc(dc);
-
- return TRUE;
-}
-
-/*
- * @implemented
- */
-BOOL
-APIENTRY
-NtGdiSetVirtualResolution(
- IN HDC hdc,
- IN INT cxVirtualDevicePixel,
- IN INT cyVirtualDevicePixel,
- IN INT cxVirtualDeviceMm,
- IN INT cyVirtualDeviceMm)
-{
- PDC dc;
- PDC_ATTR pdcattr;
-
- /* Check parameters (all zeroes resets to real resolution) */
- if (cxVirtualDevicePixel == 0 && cyVirtualDevicePixel == 0 &&
- cxVirtualDeviceMm == 0 && cyVirtualDeviceMm == 0)
- {
- cxVirtualDevicePixel = NtGdiGetDeviceCaps(hdc, HORZRES);
- cyVirtualDevicePixel = NtGdiGetDeviceCaps(hdc, VERTRES);
- cxVirtualDeviceMm = NtGdiGetDeviceCaps(hdc, HORZSIZE);
- cyVirtualDeviceMm = NtGdiGetDeviceCaps(hdc, VERTSIZE);
- }
- else if (cxVirtualDevicePixel == 0 || cyVirtualDevicePixel == 0 ||
- cxVirtualDeviceMm == 0 || cyVirtualDeviceMm == 0)
- {
- return FALSE;
- }
-
- dc = DC_LockDc(hdc);
- if (!dc) return FALSE;
-
- pdcattr = dc->pdcattr;
-
- pdcattr->szlVirtualDevicePixel.cx = cxVirtualDevicePixel;
- pdcattr->szlVirtualDevicePixel.cy = cyVirtualDevicePixel;
- pdcattr->szlVirtualDeviceMm.cx = cxVirtualDeviceMm;
- pdcattr->szlVirtualDeviceMm.cy = cyVirtualDeviceMm;
-
-// DC_vUpdateXforms(dc);
- DC_UnlockDc(dc);
- return TRUE;
-}
-
-PPOINTL
-FASTCALL
-IntptlBrushOrigin(PDC pdc, LONG x, LONG y )
-{
- pdc->dclevel.ptlBrushOrigin.x = x;
- pdc->dclevel.ptlBrushOrigin.y = y;
- pdc->ptlFillOrigin.x = pdc->dclevel.ptlBrushOrigin.x + pdc->ptlDCOrig.x;
- pdc->ptlFillOrigin.y = pdc->dclevel.ptlBrushOrigin.y + pdc->ptlDCOrig.y;
- return &pdc->dclevel.ptlBrushOrigin;
-}
-
-static
-VOID FASTCALL
-DC_vGetAspectRatioFilter(PDC pDC, LPSIZE AspectRatio)
-{
- if (pDC->pdcattr->flFontMapper & 1) // TRUE assume 1.
- {
- // "This specifies that Windows should only match fonts that have the
- // same aspect ratio as the display.", Programming Windows, Fifth Ed.
- AspectRatio->cx = pDC->ppdev->gdiinfo.ulLogPixelsX;
- AspectRatio->cy = pDC->ppdev->gdiinfo.ulLogPixelsY;
- }
- else
- {
- AspectRatio->cx = 0;
- AspectRatio->cy = 0;
- }
-}
-
-BOOL APIENTRY
-NtGdiGetDCPoint(
- HDC hDC,
- UINT iPoint,
- PPOINTL Point)
-{
- BOOL Ret = TRUE;
- DC *pdc;
- POINTL SafePoint;
- SIZE Size;
- PSIZEL pszlViewportExt;
- NTSTATUS Status = STATUS_SUCCESS;
-
- if (!Point)
- {
- EngSetLastError(ERROR_INVALID_PARAMETER);
- return FALSE;
- }
-
- pdc = DC_LockDc(hDC);
- if (!pdc)
- {
- EngSetLastError(ERROR_INVALID_HANDLE);
- return FALSE;
- }
-
- switch (iPoint)
- {
- case GdiGetViewPortExt:
- pszlViewportExt = DC_pszlViewportExt(pdc);
- SafePoint.x = pszlViewportExt->cx;
- SafePoint.y = pszlViewportExt->cy;
- break;
-
- case GdiGetWindowExt:
- SafePoint.x = pdc->pdcattr->szlWindowExt.cx;
- SafePoint.y = pdc->pdcattr->szlWindowExt.cy;
- break;
-
- case GdiGetViewPortOrg:
- SafePoint = pdc->pdcattr->ptlViewportOrg;
- break;
-
- case GdiGetWindowOrg:
- SafePoint = pdc->pdcattr->ptlWindowOrg;
- break;
-
- case GdiGetDCOrg:
- SafePoint = pdc->ptlDCOrig;
- break;
-
- case GdiGetAspectRatioFilter:
- DC_vGetAspectRatioFilter(pdc, &Size);
- SafePoint.x = Size.cx;
- SafePoint.y = Size.cy;
- break;
-
- default:
- EngSetLastError(ERROR_INVALID_PARAMETER);
- Ret = FALSE;
- break;
- }
-
- if (Ret)
- {
- _SEH2_TRY
- {
- ProbeForWrite(Point, sizeof(POINT), 1);
- *Point = SafePoint;
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- Status = _SEH2_GetExceptionCode();
- }
- _SEH2_END;
-
- if (!NT_SUCCESS(Status))
- {
- SetLastNtError(Status);
- Ret = FALSE;
- }
- }
-
- DC_UnlockDc(pdc);
- return Ret;
-}
-
-/* EOF */
projects / reactos.git / blobdiff