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Implement more bpicture font methods, now PicturePlayer checks the size

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of the function table, so if someone passes a smaller table, we avoid
 
calling invalid pointers.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21939 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stefano Ceccherini
2007-08-14 08:05:05 +00:00
parent 8e503a70c8
commit c00e6e3f89
2 changed files with 121 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/kits/interface/PicturePlayer.cpp
+99 -9
View File
@@ -58,9 +58,14 @@ PicturePlayer::~PicturePlayer()
status_t
PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
{
// TODO: we should probably check if the functions in the table are not NULL
// before calling them.
// We don't check if the functions in the table are NULL, but we
// check the tableEntries to see if the table is big enough.
// If an application supplies the wrong size or an invalid pointer,
// it's its own fault.
// TODO: Call the exit_font_state_change and exit_state_change hooks.
// there are no ops for them, so we need to keep track of the size of the data block,
// and call them when we are at the end.
const char *data = reinterpret_cast<const char *>(fData);
size_t pos = 0;
@@ -76,6 +81,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
switch (op) {
case B_PIC_MOVE_PEN_BY:
{
if (tableEntries <= 1)
break;
((fnc_BPoint)callBackTable[1])(userData,
*reinterpret_cast<const BPoint *>(data)); /* where */
break;
@@ -83,6 +90,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_STROKE_LINE:
{
if (tableEntries <= 2)
break;
((fnc_BPointBPoint)callBackTable[2])(userData,
*reinterpret_cast<const BPoint *>(data), /* start */
*reinterpret_cast<const BPoint *>(data + sizeof(BPoint))); /* end */
@@ -91,6 +100,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_STROKE_RECT:
{
if (tableEntries <= 3)
break;
((fnc_BRect)callBackTable[3])(userData,
*reinterpret_cast<const BRect *>(data)); /* rect */
break;
@@ -98,6 +109,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_FILL_RECT:
{
if (tableEntries <= 4)
break;
((fnc_BRect)callBackTable[4])(userData,
*reinterpret_cast<const BRect *>(data)); /* rect */
break;
@@ -105,6 +118,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_STROKE_ROUND_RECT:
{
if (tableEntries <= 5)
break;
((fnc_BRectBPoint)callBackTable[5])(userData,
*reinterpret_cast<const BRect *>(data), /* rect */
*reinterpret_cast<const BPoint *>(data + sizeof(BRect))); /* radii */
@@ -113,6 +128,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_FILL_ROUND_RECT:
{
if (tableEntries <= 6)
break;
((fnc_BRectBPoint)callBackTable[6])(userData,
*reinterpret_cast<const BRect *>(data), /* rect */
*reinterpret_cast<const BPoint *>(data + sizeof(BRect))); /* radii */
@@ -121,6 +138,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_STROKE_BEZIER:
{
if (tableEntries <= 7)
break;
((fnc_PBPoint)callBackTable[7])(userData,
reinterpret_cast<const BPoint *>(data));
break;
@@ -128,6 +147,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_FILL_BEZIER:
{
if (tableEntries <= 8)
break;
((fnc_PBPoint)callBackTable[8])(userData,
reinterpret_cast<const BPoint *>(data));
break;
@@ -135,6 +156,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_STROKE_ARC:
{
if (tableEntries <= 9)
break;
((fnc_BPointBPointff)callBackTable[9])(userData,
*reinterpret_cast<const BPoint *>(data), /* center */
*reinterpret_cast<const BPoint *>(data + sizeof(BPoint)), /* radii */
@@ -145,6 +168,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_FILL_ARC:
{
if (tableEntries <= 10)
break;
((fnc_BPointBPointff)callBackTable[10])(userData,
*reinterpret_cast<const BPoint *>(data), /* center */
*reinterpret_cast<const BPoint *>(data + sizeof(BPoint)), /* radii */
@@ -155,6 +180,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_STROKE_ELLIPSE:
{
if (tableEntries <= 11)
break;
const BRect *rect = reinterpret_cast<const BRect *>(data);
BPoint radii((rect->Width() + 1) / 2.0f, (rect->Height() + 1) / 2.0f);
BPoint center = rect->LeftTop() + radii;
@@ -164,6 +191,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_FILL_ELLIPSE:
{
if (tableEntries <= 12)
break;
const BRect *rect = reinterpret_cast<const BRect *>(data);
BPoint radii((rect->Width() + 1) / 2.0f, (rect->Height() + 1) / 2.0f);
BPoint center = rect->LeftTop() + radii;
@@ -173,6 +202,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_STROKE_POLYGON:
{
if (tableEntries <= 13)
break;
int32 numPoints = *reinterpret_cast<const int32 *>(data);
((fnc_iPBPointb)callBackTable[13])(userData,
numPoints,
@@ -183,6 +214,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_FILL_POLYGON:
{
if (tableEntries <= 14)
break;
((fnc_iPBPoint)callBackTable[14])(userData,
*reinterpret_cast<const int32 *>(data), /* numPoints */
reinterpret_cast<const BPoint *>(data + sizeof(int32))); /* points */
@@ -192,6 +225,10 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_STROKE_SHAPE:
case B_PIC_FILL_SHAPE:
{
const bool stroke = (op == B_PIC_STROKE_SHAPE);
if (tableEntries <= 16 || (stroke && tableEntries <= 15))
break;
int32 opCount = *reinterpret_cast<const int32 *>(data);
int32 ptCount = *reinterpret_cast<const int32 *>(data + sizeof(int32));
const uint32 *opList = reinterpret_cast<const uint32 *>(data + 2 * sizeof(int32));
@@ -201,13 +238,15 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
BShape shape;
shape.SetData(opCount, ptCount, opList, ptList);
const int32 tableIndex = (op == B_PIC_STROKE_SHAPE) ? 15 : 16;
const int32 tableIndex = stroke ? 15 : 16;
((fnc_BShape)callBackTable[tableIndex])(userData, &shape);
break;
}
case B_PIC_DRAW_STRING:
{
if (tableEntries <= 17)
break;
((fnc_Pcff)callBackTable[17])(userData,
reinterpret_cast<const char *>(data + 2 * sizeof(float)), /* string */
*reinterpret_cast<const float *>(data), /* escapement.space */
@@ -217,6 +256,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_DRAW_PIXELS:
{
if (tableEntries <= 18)
break;
((fnc_DrawPixels)callBackTable[18])(userData,
*reinterpret_cast<const BRect *>(data), /* src */
*reinterpret_cast<const BRect *>(data + 1 * sizeof(BRect)), /* dst */
@@ -231,6 +272,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_DRAW_PICTURE:
{
if (tableEntries <= 19)
break;
((fnc_DrawPicture)callBackTable[19])(userData,
*reinterpret_cast<const BPoint *>(data),
*reinterpret_cast<const int32 *>(data + sizeof(BPoint)));
@@ -239,46 +282,62 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_CLIPPING_RECTS:
{
if (tableEntries <= 20)
break;
break;
}
case B_PIC_CLEAR_CLIPPING_RECTS:
{
if (tableEntries <= 20)
break;
((fnc_PBRecti)callBackTable[20])(userData, NULL, 0);
break;
}
case B_PIC_CLIP_TO_PICTURE:
{
if (tableEntries <= 21)
break;
break;
}
case B_PIC_PUSH_STATE:
{
if (tableEntries <= 22)
break;
((fnc)callBackTable[22])(userData);
break;
}
case B_PIC_POP_STATE:
{
if (tableEntries <= 23)
break;
((fnc)callBackTable[23])(userData);
break;
}
case B_PIC_ENTER_STATE_CHANGE:
{
if (tableEntries <= 24)
break;
((fnc)callBackTable[24])(userData);
break;
}
case B_PIC_ENTER_FONT_STATE:
{
if (tableEntries <= 26)
break;
((fnc)callBackTable[26])(userData);
break;
}
case B_PIC_SET_ORIGIN:
{
if (tableEntries <= 28)
break;
((fnc_BPoint)callBackTable[28])(userData,
*reinterpret_cast<const BPoint *>(data)); /* origin */
break;
@@ -286,6 +345,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_PEN_LOCATION:
{
if (tableEntries <= 29)
break;
((fnc_BPoint)callBackTable[29])(userData,
*reinterpret_cast<const BPoint *>(data)); /* location */
break;
@@ -293,6 +354,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_DRAWING_MODE:
{
if (tableEntries <= 30)
break;
((fnc_s)callBackTable[30])(userData,
*reinterpret_cast<const int16 *>(data)); /* mode */
break;
@@ -300,6 +363,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_LINE_MODE:
{
if (tableEntries <= 31)
break;
((fnc_ssf)callBackTable[31])(userData,
*reinterpret_cast<const int16 *>(data), /* cap-mode */
*reinterpret_cast<const int16 *>(data + 1 * sizeof(int16)), /* join-mode */
@@ -309,6 +374,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_PEN_SIZE:
{
if (tableEntries <= 32)
break;
((fnc_f)callBackTable[32])(userData,
*reinterpret_cast<const float *>(data)); /* size */
break;
@@ -316,13 +383,17 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_FORE_COLOR:
{
if (tableEntries <= 33)
break;
((fnc_Color)callBackTable[33])(userData,
*reinterpret_cast<const rgb_color *>(data)); /* color */
break;
}
case B_PIC_SET_BACK_COLOR:
{
{
if (tableEntries <= 34)
break;
((fnc_Color)callBackTable[34])(userData,
*reinterpret_cast<const rgb_color *>(data)); /* color */
break;
@@ -330,6 +401,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_STIPLE_PATTERN:
{
if (tableEntries <= 35)
break;
((fnc_Pattern)callBackTable[35])(userData,
*reinterpret_cast<const pattern *>(data)); /* pattern */
break;
@@ -337,6 +410,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_SCALE:
{
if (tableEntries <= 36)
break;
((fnc_f)callBackTable[36])(userData,
*reinterpret_cast<const float *>(data)); /* scale */
break;
@@ -344,7 +419,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_FONT_FAMILY:
{
debugger("B_PIC_SET_FONT_FAMILY"); // TODO: is this unused?
if (tableEntries <= 37)
break;
((fnc_Pc)callBackTable[37])(userData,
reinterpret_cast<const char *>(data)); /* string */
break;
@@ -352,7 +428,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_FONT_STYLE:
{
debugger("B_PIC_SET_FONT_STYLE"); // TODO: is this unused?
if (tableEntries <= 38)
break;
((fnc_Pc)callBackTable[38])(userData,
reinterpret_cast<const char *>(data)); /* string */
break;
@@ -360,6 +437,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_FONT_SPACING:
{
if (tableEntries <= 39)
break;
((fnc_i)callBackTable[39])(userData,
*reinterpret_cast<const int32 *>(data)); /* spacing */
break;
@@ -367,6 +446,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_FONT_SIZE:
{
if (tableEntries <= 40)
break;
((fnc_f)callBackTable[40])(userData,
*reinterpret_cast<const float *>(data)); /* size */
break;
@@ -374,6 +455,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_FONT_ROTATE:
{
if (tableEntries <= 41)
break;
((fnc_f)callBackTable[41])(userData,
*reinterpret_cast<const float *>(data)); /* rotation */
break;
@@ -381,6 +464,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_FONT_ENCODING:
{
if (tableEntries <= 42)
break;
((fnc_i)callBackTable[42])(userData,
*reinterpret_cast<const int32 *>(data)); /* encoding */
break;
@@ -388,6 +473,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_FONT_FLAGS:
{
if (tableEntries <= 43)
break;
((fnc_i)callBackTable[43])(userData,
*reinterpret_cast<const int32 *>(data)); /* flags */
break;
@@ -395,6 +482,8 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_FONT_SHEAR:
{
if (tableEntries <= 44)
break;
((fnc_f)callBackTable[44])(userData,
*reinterpret_cast<const float *>(data)); /* shear */
break;
@@ -402,16 +491,17 @@ PicturePlayer::Play(void **callBackTable, int32 tableEntries, void *userData)
case B_PIC_SET_FONT_FACE:
{
if (tableEntries <= 46)
break;
((fnc_i)callBackTable[46])(userData,
*reinterpret_cast<const int32 *>(data)); /* flags */
break;
}
// TODO: Looks like R5 function table only exports 47 functions...
// I added this here as a temporary workaround, because there seems to be
// no room for this op, although it's obviously implemented in some way...
case B_PIC_SET_BLENDING_MODE:
{
if (tableEntries <= 47)
break;
((fnc_ss)callBackTable[47])(userData,
*reinterpret_cast<const int16 *>(data), /* alphaSrcMode */
*reinterpret_cast<const int16 *>(data + sizeof(int16))); /* alphaFncMode */
src/servers/app/ServerPicture.cpp
+22 -7
View File
@@ -595,7 +595,10 @@ set_font_style(ViewLayer *view, const char *style)
static void
set_font_spacing(ViewLayer *view, int32 spacing)
{
printf("SetFontSpacing(%ld)\n", spacing);
ServerFont font;
font.SetSpacing(spacing);
view->CurrentState()->SetFont(font, B_FONT_SPACING);
view->Window()->GetDrawingEngine()->SetFont(view->CurrentState()->Font());
}
@@ -622,28 +625,40 @@ set_font_rotate(ViewLayer *view, float rotation)
static void
set_font_encoding(ViewLayer *view, int32 encoding)
{
printf("SetFontEncoding(%ld)\n", encoding);
ServerFont font;
font.SetEncoding(encoding);
view->CurrentState()->SetFont(font, B_FONT_ENCODING);
view->Window()->GetDrawingEngine()->SetFont(view->CurrentState()->Font());
}
static void
set_font_flags(ViewLayer *view, int32 flags)
{
printf("SetFontFlags(%ld)\n", flags);
ServerFont font;
font.SetFlags(flags);
view->CurrentState()->SetFont(font, B_FONT_FLAGS);
view->Window()->GetDrawingEngine()->SetFont(view->CurrentState()->Font());
}
static void
set_font_shear(ViewLayer *view, float shear)
{
printf("SetFontShear(%.2f)\n", shear);
ServerFont font;
font.SetShear(shear);
view->CurrentState()->SetFont(font, B_FONT_SHEAR);
view->Window()->GetDrawingEngine()->SetFont(view->CurrentState()->Font());
}
static void
set_font_face(ViewLayer *view, int32 flags)
set_font_face(ViewLayer *view, int32 face)
{
printf("SetFontFace(%ld)\n", flags);
ServerFont font;
font.SetFace(face);
view->CurrentState()->SetFont(font, B_FONT_FACE);
view->Window()->GetDrawingEngine()->SetFont(view->CurrentState()->Font());
}
@@ -707,7 +722,7 @@ const void *tableEntries[] = {
(const void *)set_font_flags,
(const void *)set_font_shear,
(const void *)reserved, // TODO: Marc Flerackers calls this "set_font_bpp". Investigate
(const void *)set_font_face, // TODO: R5 function table ends here... how is set blending mode implemented there ?
(const void *)set_font_face,
(const void *)set_blending_mode
};