gdiplus.c File Reference

#include <stdarg.h>
#include <math.h>
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "wine/debug.h"
#include "wingdi.h"
#include "objbase.h"
#include "winreg.h"
#include "shlwapi.h"
#include "gdiplus.h"
#include "gdiplus_private.h"

Include dependency graph for gdiplus.c:

Go to the source code of this file.

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (gdiplus)
static Status WINAPI	NotificationHook (ULONG_PTR *token)
static void WINAPI	NotificationUnhook (ULONG_PTR token)
BOOL WINAPI	DllMain (HINSTANCE hinst, DWORD reason, LPVOID reserved)
Status WINAPI	GdiplusStartup (ULONG_PTR *token, const struct GdiplusStartupInput *input, struct GdiplusStartupOutput *output)
GpStatus WINAPI	GdiplusNotificationHook (ULONG_PTR *token)
void WINAPI	GdiplusNotificationUnhook (ULONG_PTR token)
ULONG WINAPI	GdiplusShutdown_wrapper (ULONG_PTR token)
void *WINGDIPAPI	GdipAlloc (SIZE_T size)
void WINGDIPAPI	GdipFree (void *ptr)
static void	add_arc_part (GpPointF *pt, REAL x1, REAL y1, REAL x2, REAL y2, REAL start, REAL end, BOOL write_first)
static void	unstretch_angle (REAL *angle, REAL rad_x, REAL rad_y)
INT	arc2polybezier (GpPointF *points, REAL x1, REAL y1, REAL x2, REAL y2, REAL startAngle, REAL sweepAngle)
COLORREF	ARGB2COLORREF (ARGB color)
HBITMAP	ARGB2BMP (ARGB color)
REAL	gdiplus_atan2 (REAL dy, REAL dx)
GpStatus	hresult_to_status (HRESULT res)
REAL	units_to_pixels (REAL units, GpUnit unit, REAL dpi)
REAL	pixels_to_units (REAL pixels, GpUnit unit, REAL dpi)
REAL	units_scale (GpUnit from, GpUnit to, REAL dpi)
void	calc_curve_bezier (const GpPointF *pts, REAL tension, REAL *x1, REAL *y1, REAL *x2, REAL *y2)
void	calc_curve_bezier_endp (REAL xend, REAL yend, REAL xadj, REAL yadj, REAL tension, REAL *x, REAL *y)
BOOL	lengthen_path (GpPath *path, INT len)
void	convert_32bppARGB_to_32bppPARGB (UINT width, UINT height, BYTE *dst_bits, INT dst_stride, const BYTE *src_bits, INT src_stride)
void	delete_element (region_element *element)
const char *	debugstr_rectf (const RectF *rc)
const char *	debugstr_pointf (const PointF *pt)

Variables
static const REAL	mm_per_inch = 25.4
static const REAL	point_per_inch = 72.0

Function Documentation

add_arc_part()

static void add_arc_part ( GpPointF *  pt, REAL  x1, REAL  y1, REAL  x2, REAL  y2, REAL  start, REAL  end, BOOL  write_first  )

static

Definition at line 162 of file gdiplus.c.

{
    REAL center_x, center_y, rad_x, rad_y, cos_start, cos_end,
        sin_start, sin_end, a, half;
    INT i;
 
    rad_x = x2 / 2.0;
    rad_y = y2 / 2.0;
    center_x = x1 + rad_x;
    center_y = y1 + rad_y;
 
    cos_start = cos(start);
    cos_end = cos(end);
    sin_start = sin(start);
    sin_end = sin(end);
 
    half = (end - start) / 2.0;
    a = 4.0 / 3.0 * (1 - cos(half)) / sin(half);
 
    if(write_first){
        pt[0].X = cos_start;
        pt[0].Y = sin_start;
    }
    pt[1].X = cos_start - a * sin_start;
    pt[1].Y = sin_start + a * cos_start;
 
    pt[3].X = cos_end;
    pt[3].Y = sin_end;
    pt[2].X = cos_end + a * sin_end;
    pt[2].Y = sin_end - a * cos_end;
 
    /* expand the points back from the unit circle to the ellipse */
    for(i = (write_first ? 0 : 1); i < 4; i ++){
        pt[i].X = pt[i].X * rad_x + center_x;
        pt[i].Y = pt[i].Y * rad_y + center_y;
    }
}

Referenced by arc2polybezier().

arc2polybezier()

INT arc2polybezier	(	GpPointF *	points,
		REAL	x1,
		REAL	y1,
		REAL	x2,
		REAL	y2,
		REAL	startAngle,
		REAL	sweepAngle
	)

Definition at line 223 of file gdiplus.c.

{
    INT i;
    REAL end_angle, start_angle, endAngle;
 
    endAngle = startAngle + sweepAngle;
    unstretch_angle(&startAngle, x2 / 2.0, y2 / 2.0);
    unstretch_angle(&endAngle, x2 / 2.0, y2 / 2.0);
 
    /* start_angle and end_angle are the iterative variables */
    start_angle = startAngle;
 
    for(i = 0; i < MAX_ARC_PTS - 1; i += 3){
        /* check if we've overshot the end angle */
        if( sweepAngle > 0.0 )
        {
            if (start_angle >= endAngle) break;
            end_angle = min(start_angle + M_PI_2, endAngle);
        }
        else
        {
            if (start_angle <= endAngle) break;
            end_angle = max(start_angle - M_PI_2, endAngle);
        }
 
        if (points)
            add_arc_part(&points[i], x1, y1, x2, y2, start_angle, end_angle, i == 0);
 
        start_angle += M_PI_2 * (sweepAngle < 0.0 ? -1.0 : 1.0);
    }
 
    if (i == 0) return 0;
    else return i+1;
}

Referenced by GdipAddPathArc(), GdipAddPathEllipse(), and GdipAddPathPie().

ARGB2BMP()

HBITMAP ARGB2BMP

(

ARGB

color

)

Definition at line 272 of file gdiplus.c.

{
    BITMAPINFO bi;
    HBITMAP result;
    RGBQUAD *bits;
    int alpha;
 
    if ((color & 0xff000000) == 0xff000000) return 0;
 
    bi.bmiHeader.biSize = sizeof(bi.bmiHeader);
    bi.bmiHeader.biWidth = 1;
    bi.bmiHeader.biHeight = 1;
    bi.bmiHeader.biPlanes = 1;
    bi.bmiHeader.biBitCount = 32;
    bi.bmiHeader.biCompression = BI_RGB;
    bi.bmiHeader.biSizeImage = 0;
    bi.bmiHeader.biXPelsPerMeter = 0;
    bi.bmiHeader.biYPelsPerMeter = 0;
    bi.bmiHeader.biClrUsed = 0;
    bi.bmiHeader.biClrImportant = 0;
 
    result = CreateDIBSection(0, &bi, DIB_RGB_COLORS, (void*)&bits, NULL, 0);
 
    bits[0].rgbReserved = alpha = (color>>24)&0xff;
    bits[0].rgbRed = ((color>>16)&0xff)*alpha/255;
    bits[0].rgbGreen = ((color>>8)&0xff)*alpha/255;
    bits[0].rgbBlue = (color&0xff)*alpha/255;
 
    return result;
}

Referenced by brush_fill_path().

ARGB2COLORREF()

COLORREF ARGB2COLORREF

(

ARGB

color

)

Definition at line 259 of file gdiplus.c.

{
    /*
    Packing of these color structures:
    COLORREF:   00bbggrr
    ARGB:       aarrggbb
    FIXME:doesn't handle alpha channel
    */
    return ((color & 0x0000ff) << 16) +
           (color & 0x00ff00) +
           ((color & 0xff0000) >> 16);
}

Referenced by create_gdi_logbrush(), and get_gdi_brush_color().

calc_curve_bezier()

void calc_curve_bezier	(	const GpPointF *	pts,
		REAL	tension,
		REAL *	x1,
		REAL *	y1,
		REAL *	x2,
		REAL *	y2
	)

Definition at line 379 of file gdiplus.c.

{
    REAL xdiff, ydiff;
 
    /* calculate tangent */
    xdiff = pts[2].X - pts[0].X;
    ydiff = pts[2].Y - pts[0].Y;
 
    /* apply tangent to get control points */
    *x1 = pts[1].X - tension * xdiff;
    *y1 = pts[1].Y - tension * ydiff;
    *x2 = pts[1].X + tension * xdiff;
    *y2 = pts[1].Y + tension * ydiff;
}

Referenced by GdipAddPathClosedCurve2(), and GdipAddPathCurve2().

calc_curve_bezier_endp()

void calc_curve_bezier_endp	(	REAL	xend,
		REAL	yend,
		REAL	xadj,
		REAL	yadj,
		REAL	tension,
		REAL *	x,
		REAL *	y
	)

Definition at line 396 of file gdiplus.c.

{
    /* tangent at endpoints is the line from the endpoint to the adjacent point */
    *x = gdip_round(tension * (xadj - xend) + xend);
    *y = gdip_round(tension * (yadj - yend) + yend);
}

Referenced by GdipAddPathCurve2().

convert_32bppARGB_to_32bppPARGB()

void convert_32bppARGB_to_32bppPARGB	(	UINT	width,
		UINT	height,
		BYTE *	dst_bits,
		INT	dst_stride,
		const BYTE *	src_bits,
		INT	src_stride
	)

Definition at line 435 of file gdiplus.c.

{
    INT x, y;
    for (y=0; y<height; y++)
    {
        const BYTE *src=src_bits+y*src_stride;
        BYTE *dst=dst_bits+y*dst_stride;
        for (x=0; x<width; x++)
        {
            BYTE alpha=src[3];
            *dst++ = (*src++ * alpha + 127) / 255;
            *dst++ = (*src++ * alpha + 127) / 255;
            *dst++ = (*src++ * alpha + 127) / 255;
            *dst++ = *src++;
        }
    }
}

Referenced by alpha_blend_hdc_pixels(), and convert_pixels().

debugstr_pointf()

const char * debugstr_pointf

(

const PointF *

pt

)

Definition at line 482 of file gdiplus.c.

{
    if (!pt) return "(null)";
    return wine_dbg_sprintf("(%0.2f,%0.2f)", pt->X, pt->Y);
}

Referenced by GdipCreateLineBrush(), GdipDrawImagePointsRect(), GdipEnumerateMetafileSrcRectDestPoints(), and GdipSetPathGradientCenterPoint().

debugstr_rectf()

const char * debugstr_rectf

(

const RectF *

rc

)

Definition at line 476 of file gdiplus.c.

{
    if (!rc) return "(null)";
    return wine_dbg_sprintf("(%0.2f,%0.2f,%0.2f,%0.2f)", rc->X, rc->Y, rc->Width, rc->Height);
}

Referenced by GdipBeginContainer(), GdipCombineRegionRect(), GdipDrawString(), GdipEnumerateMetafileSrcRectDestPoints(), GdipGetRegionBounds(), GdipMeasureCharacterRanges(), and GdipMeasureString().

delete_element()

void delete_element

(

region_element *

element

)

Definition at line 455 of file gdiplus.c.

{
    switch(element->type)
    {
        case RegionDataRect:
            break;
        case RegionDataPath:
            GdipDeletePath(element->elementdata.path);
            break;
        case RegionDataEmptyRect:
        case RegionDataInfiniteRect:
            break;
        default:
            delete_element(element->elementdata.combine.left);
            delete_element(element->elementdata.combine.right);
            heap_free(element->elementdata.combine.left);
            heap_free(element->elementdata.combine.right);
            break;
    }
}

Referenced by clone_element(), delete_element(), GdipCombineRegionPath(), GdipCombineRegionRect(), GdipCombineRegionRegion(), GdipDeleteRegion(), GdipGetClip(), GdipSetEmpty(), and GdipSetInfinite().

DllMain()

BOOL WINAPI DllMain	(	HINSTANCE	hinst,
		DWORD	reason,
		LPVOID	reserved
	)

Definition at line 58 of file gdiplus.c.

{
    TRACE("(%p, %d, %p)\n", hinst, reason, reserved);
 
    switch(reason)
    {
    case DLL_PROCESS_ATTACH:
        DisableThreadLibraryCalls( hinst );
        init_generic_string_formats();
        break;
 
    case DLL_PROCESS_DETACH:
        if (reserved) break;
        free_installed_fonts();
        free_generic_string_formats();
        break;
    }
    return TRUE;
}

GdipAlloc()

void *WINGDIPAPI GdipAlloc

(

SIZE_T

size

)

Definition at line 142 of file gdiplus.c.

{
    return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
}

Referenced by GdipPlayMetafileRecord(), get_encoder_clsid(), get_region_type(), GetBitmapPixelBuffer(), metafile_deserialize_path(), METAFILE_PlaybackObject(), png_metadata_reader(), test_encoders(), test_GdipCreateBitmapFromHBITMAP(), test_GdipDrawImagePointsRectOnMemoryDC(), test_GdipDrawLinesI(), test_GdipFillRectanglesOnBitmapTextureBrush(), test_GdipFillRectanglesOnMemoryDCTextureBrush(), test_GdipInitializePalette(), test_getadjustedpalette(), test_getpathdata(), test_remaptable(), and test_SavingImages().

GdipFree()

void WINGDIPAPI GdipFree

(

void *

ptr

)

Definition at line 150 of file gdiplus.c.

{
    HeapFree(GetProcessHeap(), 0, ptr);
}

Referenced by GdipPlayMetafileRecord(), get_encoder_clsid(), get_region_type(), METAFILE_PlaybackObject(), png_metadata_reader(), test_encoders(), test_GdipCreateBitmapFromHBITMAP(), test_GdipDrawImagePointsRectOnMemoryDC(), test_GdipDrawLinesI(), test_GdipFillRectanglesOnBitmapTextureBrush(), test_GdipFillRectanglesOnMemoryDCSolidBrush(), test_GdipFillRectanglesOnMemoryDCTextureBrush(), test_GdipInitializePalette(), test_getadjustedpalette(), test_getpathdata(), test_remaptable(), and test_SavingImages().

gdiplus_atan2()

REAL gdiplus_atan2	(	REAL	dy,
		REAL	dx
	)

Definition at line 304 of file gdiplus.c.

{
    if((dx == 0.0) && (dy != 0.0))
        return dy > 0.0 ? M_PI_2 : -M_PI_2;
 
    return atan2(dy, dx);
}

Referenced by draw_cap(), GdipGetLogFontW(), get_font_hfont(), shorten_line_percent(), and unstretch_angle().

GdiplusNotificationHook()

GpStatus WINAPI GdiplusNotificationHook

(

ULONG_PTR *

token

)

Definition at line 110 of file gdiplus.c.

{
    FIXME("%p\n", token);
    return NotificationHook(token);
}

GdiplusNotificationUnhook()

void WINAPI GdiplusNotificationUnhook

(

ULONG_PTR

token

)

Definition at line 116 of file gdiplus.c.

{
    FIXME("%ld\n", token);
    NotificationUnhook(token);
}

GdiplusShutdown_wrapper()

ULONG WINAPI GdiplusShutdown_wrapper

(

ULONG_PTR

token

)

Definition at line 125 of file gdiplus.c.

{
    /* Notice the slightly different prototype from the official
     * signature which forces us to use the _wrapper suffix.
     */
 
    /* FIXME: no object tracking */
 
    /* "bricksntiles" expects a return value of 0, which native
     * coincidentally gives.
     */
    return 0;
}

GdiplusStartup()

Status WINAPI GdiplusStartup	(	ULONG_PTR *	token,
		const struct GdiplusStartupInput *	input,
		struct GdiplusStartupOutput *	output
	)

Definition at line 81 of file gdiplus.c.

{
    if(!token || !input)
        return InvalidParameter;
 
    TRACE("%p %p %p\n", token, input, output);
    TRACE("GdiplusStartupInput %d %p %d %d\n", input->GdiplusVersion,
          input->DebugEventCallback, input->SuppressBackgroundThread,
          input->SuppressExternalCodecs);
 
    if(input->GdiplusVersion < 1 || input->GdiplusVersion > 2)
        return UnsupportedGdiplusVersion;
 
    if(input->SuppressBackgroundThread){
        if(!output)
            return InvalidParameter;
 
        output->NotificationHook = NotificationHook;
        output->NotificationUnhook = NotificationUnhook;
    }
 
    *token = 0xdeadbeef;
 
    /* FIXME: DebugEventCallback ignored */
 
    return Ok;
}

Referenced by BackgroundPageProc(), ImageView_Main(), START_TEST(), and test_startup().

hresult_to_status()

GpStatus hresult_to_status

(

HRESULT

res

)

Definition at line 312 of file gdiplus.c.

{
    switch(res){
        case S_OK:
            return Ok;
        case E_OUTOFMEMORY:
            return OutOfMemory;
        case E_INVALIDARG:
            return InvalidParameter;
        default:
            return GenericError;
    }
}

Referenced by create_optimal_palette(), decode_frame_wic(), decode_image_gif(), decode_image_png(), encode_image_wic(), GdipCreateStreamOnFile(), GdipGetAllPropertyItems(), GdipGetPropertyIdList(), GdipGetPropertySize(), GdipLoadImageFromStream(), get_decoder_info(), initialize_decoder_wic(), load_emf(), load_wmf(), METAFILE_CreateCompressedImageStream(), METAFILE_FillEmfPlusBitmap(), METAFILE_GraphicsDeleted(), and select_frame_gif().

lengthen_path()

BOOL lengthen_path	(	GpPath *	path,
		INT	len
	)

Definition at line 405 of file gdiplus.c.

{
    /* initial allocation */
    if(path->datalen == 0){
        path->datalen = len * 2;
 
        path->pathdata.Points = heap_alloc_zero(path->datalen * sizeof(PointF));
        if(!path->pathdata.Points)   return FALSE;
 
        path->pathdata.Types = heap_alloc_zero(path->datalen);
        if(!path->pathdata.Types){
            heap_free(path->pathdata.Points);
            return FALSE;
        }
    }
    /* reallocation, double size of arrays */
    else if(path->datalen - path->pathdata.Count < len){
        while(path->datalen - path->pathdata.Count < len)
            path->datalen *= 2;
 
        path->pathdata.Points = heap_realloc(path->pathdata.Points, path->datalen * sizeof(PointF));
        if(!path->pathdata.Points)  return FALSE;
 
        path->pathdata.Types = heap_realloc(path->pathdata.Types, path->datalen);
        if(!path->pathdata.Types)   return FALSE;
    }
 
    return TRUE;
}

Referenced by format_string_callback(), GdipAddPathArc(), GdipAddPathBezier(), GdipAddPathBeziers(), GdipAddPathEllipse(), GdipAddPathLine(), GdipAddPathLine2(), GdipAddPathPath(), GdipAddPathPie(), GdipAddPathPolygon(), GdipFlattenPath(), GdipPathIterNextMarkerPath(), GdipPathIterNextSubpathPath(), GdipWidenPath(), and read_element().

NotificationHook()

static Status WINAPI NotificationHook ( ULONG_PTR *  token )

static

Definition at line 41 of file gdiplus.c.

{
    TRACE("%p\n", token);
    if(!token)
        return InvalidParameter;
 
    return Ok;
}

Referenced by GdiplusNotificationHook(), and GdiplusStartup().

NotificationUnhook()

static void WINAPI NotificationUnhook ( ULONG_PTR  token )

static

Definition at line 50 of file gdiplus.c.

{
    TRACE("%ld\n", token);
}

Referenced by GdiplusNotificationUnhook(), and GdiplusStartup().

pixels_to_units()

REAL pixels_to_units	(	REAL	pixels,
		GpUnit	unit,
		REAL	dpi
	)

Definition at line 350 of file gdiplus.c.

{
    switch (unit)
    {
    case UnitPixel:
    case UnitWorld:
    case UnitDisplay:
        return pixels;
    case UnitPoint:
        return pixels * point_per_inch / dpi;
    case UnitInch:
        return pixels / dpi;
    case UnitDocument:
        return pixels * 300.0 / dpi;
    case UnitMillimeter:
        return pixels * mm_per_inch / dpi;
    default:
        FIXME("Unhandled unit type: %d\n", unit);
        return 0;
    }
}

Referenced by GdipGetFontHeight(), and units_scale().

units_scale()

REAL units_scale	(	GpUnit	from,
		GpUnit	to,
		REAL	dpi
	)

Definition at line 372 of file gdiplus.c.

{
    REAL pixels = units_to_pixels(1.0, from, dpi);
    return pixels_to_units(pixels, to, dpi);
}

Referenced by GdipDrawImagePointRect(), GdipDrawString(), GdipMeasureCharacterRanges(), GdipMeasureString(), get_font_hfont(), and test_GdipMeasureString().

units_to_pixels()

REAL units_to_pixels	(	REAL	units,
		GpUnit	unit,
		REAL	dpi
	)

Definition at line 327 of file gdiplus.c.

{
    switch (unit)
    {
    case UnitPixel:
    case UnitWorld:
    case UnitDisplay:
        return units;
    case UnitPoint:
        return units * dpi / point_per_inch;
    case UnitInch:
        return units * dpi;
    case UnitDocument:
        return units * dpi / 300.0; /* Per MSDN */
    case UnitMillimeter:
        return units * dpi / mm_per_inch;
    default:
        FIXME("Unhandled unit type: %d\n", unit);
        return 0;
    }
}

Referenced by GdipBeginContainer(), GdipCreateFont(), GdipDrawImagePointsRect(), GdipEnumerateMetafileDestPoint(), GdipGetFontHeightGivenDPI(), GdipGetImageDimension(), GdipGetImageHeight(), GdipGetImageWidth(), GdipGetLogFontW(), GdipPlayMetafileRecord(), get_graphics_transform(), get_log_fontW(), METAFILE_DrawImagePointsRect(), METAFILE_PlaybackUpdateWorldTransform(), prepare_dc(), test_font_height_scaling(), test_GdipMeasureString(), test_measured_extra_space(), and units_scale().

unstretch_angle()

static void unstretch_angle ( REAL *  angle, REAL  rad_x, REAL  rad_y  )

static

Definition at line 205 of file gdiplus.c.

{
    REAL stretched;
    INT revs_off;
 
    *angle = deg2rad(*angle);
 
    if(fabs(cos(*angle)) < 0.00001 || fabs(sin(*angle)) < 0.00001)
        return;
 
    stretched = gdiplus_atan2(sin(*angle) / fabs(rad_y), cos(*angle) / fabs(rad_x));
    revs_off = gdip_round(*angle / (2.0 * M_PI)) - gdip_round(stretched / (2.0 * M_PI));
    stretched += ((REAL)revs_off) * M_PI * 2.0;
    *angle = stretched;
}

Referenced by arc2polybezier().

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

gdiplus

)

Variable Documentation

mm_per_inch

const REAL mm_per_inch = 25.4

static

Definition at line 38 of file gdiplus.c.

Referenced by pixels_to_units(), and units_to_pixels().

point_per_inch

const REAL point_per_inch = 72.0

static

Definition at line 39 of file gdiplus.c.

Referenced by pixels_to_units(), and units_to_pixels().