mirror of
https://github.com/reactos/reactos.git
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1316 lines
32 KiB
C
1316 lines
32 KiB
C
/*
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* COPYRIGHT: GNU GPL, See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* PURPOSE: Coordinate systems
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* FILE: subsystems/win32/win32k/objects/coord.c
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* PROGRAMER: Timo Kreuzer (timo.kreuzer@rectos.org)
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*/
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/* Coordinate translation overview
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* -------------------------------
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*
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* Windows uses 3 different coordinate systems, referred to as world space,
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* page space and device space.
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*
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* Device space:
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* This is the coordinate system of the physical device that displays the
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* graphics. One unit matches one pixel of the surface. The coordinate system
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* is always orthogonal.
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*
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* Page space:
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* This is the coordinate system on the screen or on the paper layout for
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* printer devices. The coordinate system is also orthogonal but one unit
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* does not necessarily match one pixel. Instead there are different mapping
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* modes that can be set using SetMapMode() that specify how page space units
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* are transformed into device space units. These mapping modes are:
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* - MM_TEXT: One unit matches one unit in device space (one pixel)
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* - MM_TWIPS One unit matches 1/20 point (1/1440 inch)
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* - MM_LOMETRIC: One unit matches 0.1 millimeter
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* - MM_HIMETRIC: One unit matches 0.01 millimeter
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* - MM_LOENGLISH: One unit matches 0.01 inch
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* - MM_HIENGLISH: One unit matches 0.001 inch
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* - MM_ISOTROPIC:
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* - MM_ANISOTROPIC:
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* If the mapping mode is either MM_ISOTROPIC or MM_ANISOTROPIC, the actual
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* transformation is calculated from the window and viewport extension.
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* The window extension can be set using SetWindowExtEx() and describes the
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* extents of an arbitrary window (not to confuse with the gui element!) in
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* page space coordinates.
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* The viewport extension can be set using SetViewportExtEx() and describes
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* the extent of the same window in device space coordinates. If the mapping
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* mode is MM_ISOTROPIC one of the viewport extensions can be adjusted by GDI
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* to make sure the mapping stays isotropic, i.e. that it has the same x/y
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* ratio as the window extension.
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*
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* World space:
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* World space is the coordinate system that is used for all GDI drawing
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* operations. The metrics of this coordinate system depend on the DCs
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* graphics mode, which can be set using SetGraphicsMode().
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* If the graphics mode is GM_COMPATIBLE, world space is identical to page
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* space and no additional transformation is applied.
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* If the graphics mode is GM_ADVANCED, an arbitrary coordinate transformation
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* can be set using SetWorldTransform(), which is applied to transform world
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* space coordinates into page space coordinates.
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*
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* User mode data:
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* All coordinate translation data is stored in the DC attribute, so the values
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* might be invalid. This has to be taken into account. Values might also be
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* zero, so when a division is made, the value has to be read first and then
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* checked! This is true for both integer and floating point values, even if
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* we cannot get floating point exceptions on x86, we can get them on all other
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* architectures that use the FPU directly instead of emulation.
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* The result of all operations might be completely random and invalid, if it was
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* messed with in an illegal way in user mode. This is not a problem, since the
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* result of coordinate transformations are never expected to be "valid" values.
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* In the worst case, the drawing operation draws rubbish into the DC.
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*/
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/* INCLUDES ******************************************************************/
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#include <win32k.h>
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#define NDEBUG
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#include <debug.h>
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C_ASSERT(sizeof(XFORML) == sizeof(XFORM));
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/* GLOBALS *******************************************************************/
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const MATRIX gmxIdentity =
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{
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FLOATOBJ_1, FLOATOBJ_0,
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FLOATOBJ_0, FLOATOBJ_1,
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FLOATOBJ_0, FLOATOBJ_0,
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0, 0, XFORM_NO_TRANSLATION|XFORM_FORMAT_LTOL|XFORM_UNITY|XFORM_SCALE
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};
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/* FUNCTIONS *****************************************************************/
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VOID
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FASTCALL
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DC_vFixIsotropicMapping(PDC pdc)
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{
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PDC_ATTR pdcattr;
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LONG64 fx, fy;
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LONG s;
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SIZEL szlWindowExt, szlViewportExt;
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ASSERT(pdc->pdcattr->iMapMode == MM_ISOTROPIC);
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/* Get a pointer to the DC_ATTR */
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pdcattr = pdc->pdcattr;
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/* Read the extents, we rely on non-null values */
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szlWindowExt = pdcattr->szlWindowExt;
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szlViewportExt = pdcattr->szlViewportExt;
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/* Check if all values are valid */
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if ((szlWindowExt.cx == 0) || (szlWindowExt.cy == 0) ||
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(szlViewportExt.cx == 0) || (szlViewportExt.cy == 0))
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{
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/* Someone put rubbish into the fields, just ignore it. */
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return;
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}
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fx = abs((LONG64)szlWindowExt.cx * szlViewportExt.cy);
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fy = abs((LONG64)szlWindowExt.cy * szlViewportExt.cx);
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if (fx < fy)
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{
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s = (szlWindowExt.cy ^ szlViewportExt.cx) > 0 ? 1 : -1;
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pdcattr->szlViewportExt.cx = (LONG)(fx * s / szlWindowExt.cy);
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}
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else if (fx > fy)
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{
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s = (szlWindowExt.cx ^ szlViewportExt.cy) > 0 ? 1 : -1;
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pdcattr->szlViewportExt.cy = (LONG)(fy * s / szlWindowExt.cx);
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}
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/* Reset the flag */
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pdc->pdcattr->flXform &= ~PAGE_EXTENTS_CHANGED;
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}
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VOID
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FASTCALL
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DC_vGetPageToDevice(PDC pdc, MATRIX *pmx)
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{
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PDC_ATTR pdcattr = pdc->pdcattr;
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PSIZEL pszlViewPortExt;
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SIZEL szlWindowExt;
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/* Get the viewport extension */
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pszlViewPortExt = DC_pszlViewportExt(pdc);
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/* Copy the window extension, so no one can mess with it */
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szlWindowExt = pdcattr->szlWindowExt;
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/* No shearing / rotation */
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FLOATOBJ_SetLong(&pmx->efM12, 0);
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FLOATOBJ_SetLong(&pmx->efM21, 0);
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/* Calculate scaling */
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if (szlWindowExt.cx != 0)
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{
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FLOATOBJ_SetLong(&pmx->efM11, pszlViewPortExt->cx);
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FLOATOBJ_DivLong(&pmx->efM11, szlWindowExt.cx);
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}
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else
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FLOATOBJ_SetLong(&pmx->efM11, 1);
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if (szlWindowExt.cy != 0)
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{
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FLOATOBJ_SetLong(&pmx->efM22, pszlViewPortExt->cy);
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FLOATOBJ_DivLong(&pmx->efM22, szlWindowExt.cy);
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}
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else
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FLOATOBJ_SetLong(&pmx->efM22, 1);
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/* Calculate x offset */
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FLOATOBJ_SetLong(&pmx->efDx, -pdcattr->ptlWindowOrg.x);
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FLOATOBJ_Mul(&pmx->efDx, &pmx->efM11);
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FLOATOBJ_AddLong(&pmx->efDx, pdcattr->ptlViewportOrg.x);
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/* Calculate y offset */
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FLOATOBJ_SetLong(&pmx->efDy, -pdcattr->ptlWindowOrg.y);
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FLOATOBJ_Mul(&pmx->efDy, &pmx->efM22);
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FLOATOBJ_AddLong(&pmx->efDy, pdcattr->ptlViewportOrg.y);
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}
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VOID
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FASTCALL
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DC_vUpdateWorldToDevice(PDC pdc)
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{
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XFORMOBJ xoPageToDevice, xoWorldToPage, xoWorldToDevice;
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MATRIX mxPageToDevice;
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// FIXME: make sure world-to-page is valid!
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/* Construct a transformation to do the page-to-device conversion */
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DC_vGetPageToDevice(pdc, &mxPageToDevice);
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XFORMOBJ_vInit(&xoPageToDevice, &mxPageToDevice);
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/* Recalculate the world-to-device xform */
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XFORMOBJ_vInit(&xoWorldToPage, &pdc->pdcattr->mxWorldToPage);
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XFORMOBJ_vInit(&xoWorldToDevice, &pdc->pdcattr->mxWorldToDevice);
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XFORMOBJ_iCombine(&xoWorldToDevice, &xoWorldToPage, &xoPageToDevice);
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/* Reset the flags */
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pdc->pdcattr->flXform &= ~(PAGE_XLATE_CHANGED|PAGE_EXTENTS_CHANGED|WORLD_XFORM_CHANGED);
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}
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VOID
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FASTCALL
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DC_vUpdateDeviceToWorld(PDC pdc)
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{
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XFORMOBJ xoWorldToDevice, xoDeviceToWorld;
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PMATRIX pmxWorldToDevice;
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/* Get the world-to-device translation */
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pmxWorldToDevice = DC_pmxWorldToDevice(pdc);
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XFORMOBJ_vInit(&xoWorldToDevice, pmxWorldToDevice);
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/* Create inverse of world-to-device transformation */
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XFORMOBJ_vInit(&xoDeviceToWorld, &pdc->pdcattr->mxDeviceToWorld);
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if (XFORMOBJ_iInverse(&xoDeviceToWorld, &xoWorldToDevice) == DDI_ERROR)
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{
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// FIXME: do we need to reset anything?
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return;
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}
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/* Reset the flag */
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pdc->pdcattr->flXform &= ~DEVICE_TO_WORLD_INVALID;
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}
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BOOL
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NTAPI
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GreCombineTransform(
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XFORML *pxformDest,
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XFORML *pxform1,
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XFORML *pxform2)
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{
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MATRIX mxDest, mx1, mx2;
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XFORMOBJ xoDest, xo1, xo2;
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/* Check for illegal parameters */
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if (!pxformDest || !pxform1 || !pxform2) return FALSE;
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/* Initialize XFORMOBJs */
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XFORMOBJ_vInit(&xoDest, &mxDest);
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XFORMOBJ_vInit(&xo1, &mx1);
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XFORMOBJ_vInit(&xo2, &mx2);
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/* Convert the XFORMLs into XFORMOBJs */
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XFORMOBJ_iSetXform(&xo1, pxform1);
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XFORMOBJ_iSetXform(&xo2, pxform2);
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/* Combine them */
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XFORMOBJ_iCombine(&xoDest, &xo1, &xo2);
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/* Translate back into XFORML */
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XFORMOBJ_iGetXform(&xoDest, pxformDest);
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return TRUE;
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}
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BOOL
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APIENTRY
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NtGdiCombineTransform(
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LPXFORM UnsafeXFormResult,
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LPXFORM Unsafexform1,
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LPXFORM Unsafexform2)
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{
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BOOL Ret;
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_SEH2_TRY
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{
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ProbeForWrite(UnsafeXFormResult, sizeof(XFORM), 1);
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ProbeForRead(Unsafexform1, sizeof(XFORM), 1);
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ProbeForRead(Unsafexform2, sizeof(XFORM), 1);
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Ret = GreCombineTransform((XFORML*)UnsafeXFormResult,
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(XFORML*)Unsafexform1,
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(XFORML*)Unsafexform2);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Ret = FALSE;
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}
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_SEH2_END;
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return Ret;
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}
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// FIXME: Should be XFORML and use XFORMOBJ functions directly
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BOOL
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APIENTRY
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NtGdiGetTransform(
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HDC hdc,
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DWORD iXform,
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LPXFORM pXForm)
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{
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PDC pdc;
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BOOL ret = TRUE;
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MATRIX mxPageToDevice;
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XFORMOBJ xo;
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PMATRIX pmx;
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if (!pXForm)
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{
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EngSetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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pdc = DC_LockDc(hdc);
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if (!pdc)
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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switch (iXform)
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{
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case GdiWorldSpaceToPageSpace:
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pmx = DC_pmxWorldToPage(pdc);
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break;
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case GdiWorldSpaceToDeviceSpace:
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pmx = DC_pmxWorldToDevice(pdc);
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break;
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case GdiDeviceSpaceToWorldSpace:
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pmx = DC_pmxDeviceToWorld(pdc);
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break;
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case GdiPageSpaceToDeviceSpace:
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DC_vGetPageToDevice(pdc, &mxPageToDevice);
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pmx = &mxPageToDevice;
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break;
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default:
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DPRINT1("Unknown transform %lu\n", iXform);
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ret = FALSE;
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goto leave;
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}
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/* Initialize an XFORMOBJ */
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XFORMOBJ_vInit(&xo, pmx);
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_SEH2_TRY
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{
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ProbeForWrite(pXForm, sizeof(XFORML), 1);
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XFORMOBJ_iGetXform(&xo, (XFORML*)pXForm);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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ret = FALSE;
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}
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_SEH2_END;
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leave:
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DC_UnlockDc(pdc);
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return ret;
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}
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|
|
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/*!
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* Converts points from logical coordinates into device coordinates.
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* Conversion depends on the mapping mode,
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* world transfrom, viewport origin settings for the given device context.
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* \param hDC device context.
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* \param Points an array of POINT structures (in/out).
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* \param Count number of elements in the array of POINT structures.
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* \return TRUE if success, FALSE otherwise.
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*/
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BOOL
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APIENTRY
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NtGdiTransformPoints(
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HDC hDC,
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PPOINT UnsafePtsIn,
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PPOINT UnsafePtOut,
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INT Count,
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INT iMode)
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{
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PDC pdc;
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LPPOINT Points;
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ULONG Size;
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BOOL ret = TRUE;
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if (Count <= 0)
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return TRUE;
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pdc = DC_LockDc(hDC);
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if (!pdc)
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{
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EngSetLastError(ERROR_INVALID_PARAMETER);
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return FALSE;
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}
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Size = Count * sizeof(POINT);
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// FIXME: It would be wise to have a small stack buffer as optimization
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Points = ExAllocatePoolWithTag(PagedPool, Size, GDITAG_TEMP);
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if (!Points)
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{
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DC_UnlockDc(pdc);
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EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
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return FALSE;
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}
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_SEH2_TRY
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{
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ProbeForWrite(UnsafePtOut, Size, 1);
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ProbeForRead(UnsafePtsIn, Size, 1);
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RtlCopyMemory(Points, UnsafePtsIn, Size);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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/* Do not set last error */
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_SEH2_YIELD(goto leave;)
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}
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_SEH2_END;
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|
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switch (iMode)
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{
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case GdiDpToLp:
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DC_vXformDeviceToWorld(pdc, Count, Points, Points);
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break;
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|
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case GdiLpToDp:
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DC_vXformWorldToDevice(pdc, Count, Points, Points);
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break;
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|
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case 2: // Not supported yet. Need testing.
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default:
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{
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EngSetLastError(ERROR_INVALID_PARAMETER);
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ret = FALSE;
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goto leave;
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}
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}
|
|
|
|
_SEH2_TRY
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{
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/* Pointer was already probed! */
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RtlCopyMemory(UnsafePtOut, Points, Size);
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
|
|
/* Do not set last error */
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ret = 0;
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}
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_SEH2_END;
|
|
|
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//
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// If we are getting called that means User XForms is a mess!
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//
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leave:
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DC_UnlockDc(pdc);
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ExFreePoolWithTag(Points, GDITAG_TEMP);
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return ret;
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}
|
|
|
|
BOOL
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|
NTAPI
|
|
GreModifyWorldTransform(
|
|
PDC pdc,
|
|
const XFORML *pxform,
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|
DWORD dwMode)
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|
{
|
|
MATRIX mxSrc;
|
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XFORMOBJ xoSrc, xoDC;
|
|
|
|
switch (dwMode)
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{
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case MWT_IDENTITY:
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pdc->pdcattr->mxWorldToPage = gmxIdentity;
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break;
|
|
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case MWT_LEFTMULTIPLY:
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XFORMOBJ_vInit(&xoDC, &pdc->pdcattr->mxWorldToPage);
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XFORMOBJ_vInit(&xoSrc, &mxSrc);
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if (XFORMOBJ_iSetXform(&xoSrc, pxform) == DDI_ERROR)
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return FALSE;
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|
XFORMOBJ_iCombine(&xoDC, &xoSrc, &xoDC);
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break;
|
|
|
|
case MWT_RIGHTMULTIPLY:
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XFORMOBJ_vInit(&xoDC, &pdc->pdcattr->mxWorldToPage);
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XFORMOBJ_vInit(&xoSrc, &mxSrc);
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if (XFORMOBJ_iSetXform(&xoSrc, pxform) == DDI_ERROR)
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return FALSE;
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XFORMOBJ_iCombine(&xoDC, &xoDC, &xoSrc);
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break;
|
|
|
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case MWT_MAX+1: // Must be MWT_SET????
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XFORMOBJ_vInit(&xoDC, &pdc->pdcattr->mxWorldToPage);
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if (XFORMOBJ_iSetXform(&xoDC, pxform) == DDI_ERROR)
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|
return FALSE;
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break;
|
|
|
|
default:
|
|
return FALSE;
|
|
}
|
|
|
|
/*Set invalidation flags */
|
|
pdc->pdcattr->flXform |= WORLD_XFORM_CHANGED|DEVICE_TO_WORLD_INVALID;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
BOOL
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|
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|DEVICE_TO_WORLD_INVALID;
|
|
|
|
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 iPrevMapMode;
|
|
FLONG flXform;
|
|
PDC_ATTR pdcattr = dc->pdcattr;
|
|
|
|
flXform = 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;
|
|
flXform |= PAGE_TO_DEVICE_SCALE_IDENTITY;
|
|
break;
|
|
|
|
case MM_ISOTROPIC:
|
|
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:
|
|
flXform &= ~(PAGE_TO_DEVICE_IDENTITY|POSITIVE_Y_IS_UP);
|
|
flXform |= ISO_OR_ANISO_MAP_MODE;
|
|
break;
|
|
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
/* Save the old map mode and set the new one */
|
|
iPrevMapMode = pdcattr->iMapMode;
|
|
pdcattr->iMapMode = MapMode;
|
|
|
|
/* Update xform flags */
|
|
pdcattr->flXform = flXform | (PAGE_XLATE_CHANGED|PAGE_EXTENTS_CHANGED|
|
|
INVALIDATE_ATTRIBUTES|DEVICE_TO_PAGE_INVALID|DEVICE_TO_WORLD_INVALID);
|
|
|
|
return iPrevMapMode;
|
|
}
|
|
|
|
|
|
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, cx;
|
|
|
|
pdcattr = dc->pdcattr;
|
|
|
|
if (!(pdcattr->dwLayout & LAYOUT_RTL))
|
|
{
|
|
pdcattr->ptlWindowOrg.x = pdcattr->lWindowOrgx; // Flip it back.
|
|
return;
|
|
}
|
|
|
|
/* Copy the window extension, so no one can mess with it */
|
|
cx = pdcattr->szlViewportExt.cx;
|
|
if (cx == 0) return;
|
|
//
|
|
// WOrgx = wox - (Width - 1) * WExtx / VExtx
|
|
//
|
|
X = (dc->erclWindow.right - dc->erclWindow.left) - 1; // Get device width - 1
|
|
|
|
X = (X * pdcattr->szlWindowExt.cx) / 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);
|
|
}
|
|
|
|
// 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;
|
|
}
|
|
|
|
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;
|
|
|
|
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)
|
|
{
|
|
Ret = FALSE;
|
|
}
|
|
_SEH2_END;
|
|
}
|
|
|
|
DC_UnlockDc(pdc);
|
|
return Ret;
|
|
}
|
|
|
|
/* EOF */
|