i2p/haiku-beta6
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Removed a few compiler warnings

Browse Source 
Added app-side support for font list
Added mostly-empty global font functions and documented them


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4439 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
DarkWyrm
2003-09-01 17:08:34 +00:00
parent 6a746063c9
commit edd19f3d5c
5 changed files with 581 additions and 84 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/kits/interface/Font.cpp
+184 -78
View File
@@ -26,6 +26,133 @@
#include <Rect.h>
#include <stdio.h>
#include <Font.h>
#include <PortLink.h>
//----------------------------------------------------------------------------------------
// Globals
//----------------------------------------------------------------------------------------
// The actual objects which the globals point to
BFont be_plain_bfont;
BFont be_bold_bfont;
BFont be_fixed_bfont;
const BFont *be_plain_font=&be_plain_bfont;
const BFont *be_bold_font=&be_bold_bfont;
const BFont *be_fixed_font=&be_fixed_bfont;
/*!
\brief Private function used by Be. Exists only for compatibility. Does nothing.
*/
void _font_control_(BFont *font, int32 cmd, void *data)
{
}
/*!
\brief Returns the number of installed font families
\return The number of installed font families
*/
int32 count_font_families(void)
{
// TODO: Implement
}
/*!
\brief Returns the number of styles available for a font family
\return The number of styles available for a font family
*/
int32 count_font_styles(font_family name)
{
// TODO: Implement
}
/*!
\brief Retrieves the family name at the specified index
\param index Unique font identifier code.
\param name font_family string to receive the name of the family
\param flags iF non-NULL, the values of the flags IS_FIXED and B_HAS_TUNED_FONT are returned
\return B_ERROR if the index does not correspond to a font family
*/
status_t get_font_family(int32 index, font_family *name, uint32 *flags=NULL)
{
// Fix over R5, which does not check for NULL font family names - it just crashes
if(!name)
return B_ERROR;
// TODO: Implement
}
/*!
\brief Retrieves the family name at the specified index
\param index Unique font identifier code.
\param name font_family string to receive the name of the family
\param flags iF non-NULL, the values of the flags IS_FIXED and B_HAS_TUNED_FONT are returned
\return B_ERROR if the index does not correspond to a font style
*/
status_t get_font_style(font_family family, int32 index, font_style *name, uint32 *flags)
{
// Fix over R5, which does not check for NULL font style names - it just crashes
if(!name)
return B_ERROR;
// TODO: Implement
}
/*!
\brief Retrieves the family name at the specified index
\param index Unique font identifier code.
\param name font_family string to receive the name of the family
\param face recipient of font face value, such as B_REGULAR_FACE
\param flags iF non-NULL, the values of the flags IS_FIXED and B_HAS_TUNED_FONT are returned
\return B_ERROR if the index does not correspond to a font style
The face value returned by this function is not very reliable. At the same time, the value
returned should be fairly reliable, returning the proper flag for 90%-99% of font names.
*/
status_t get_font_style(font_family family, int32 index, font_style *name,
uint16 *face, uint32 *flags)
{
// Fix over R5, which does not check for NULL font style names - it just crashes
if(!name || !face)
return B_ERROR;
// TODO: Implement
}
/*!
\brief Updates the font family list
\param check_only If true, the function only checks to see if the font list has changed
\return true if the font list has changed, false if not.
Because of the differences in the R5 and OpenBeOS font subsystems, this function operates
slightly differently, resulting in more efficient operation. A global font list for all
applications is maintained, so calling this function will still be quite expensive,
but it should be unnecessary in most applications.
*/
bool update_font_families(bool check_only)
{
// TODO: Implement
}
status_t get_font_cache_info(uint32 id, void *set)
{
// TODO: Implement
// Note that the only reliable data from this function will probably be the cache size
// Depending on how the font cache is implemented, this function and the corresponding
// set function will either see major revision or completely disappear in R2.
}
status_t set_font_cache_info(uint32 id, void *set)
{
// TODO: Implement
// Note that this function will likely only set the cache size in our implementation
// because of (a) the lack of knowledge on R5's font system and (b) the fact that it
// is a completely different font engine.
}
/*
class BFontPrivate
{
@@ -62,42 +189,25 @@ BFontPrivate & BFontPrivate::operator=(const BFontPrivate &fontdata)
}
*/
//----------------------------------------------------------------------------------------
// BFont Class Definition
//----------------------------------------------------------------------------------------
BFont::BFont(void)
{
// private_data=new BFontPrivate();
if(be_plain_font)
{
fFamilyID=be_plain_font->fFamilyID;
fStyleID=be_plain_font->fStyleID;
fSize=be_plain_font->fSize;
fShear=be_plain_font->fShear;
fRotation=be_plain_font->fRotation;
fSpacing=be_plain_font->fSpacing;
fEncoding=be_plain_font->fEncoding;
fFace=be_plain_font->fFace;
fHeight=be_plain_font->fHeight;
// private_data->fPrivateFlags=be_plain_font->private_data->fPrivateFlags;
}
else
{
fFamilyID=0;
fStyleID=0;
fSize=0.0;
fShear=90.0;
fRotation=0.0;
fSpacing=B_CHAR_SPACING;
fEncoding=B_UNICODE_UTF8;
fFace=B_REGULAR_FACE;
fHeight.ascent=0.0;
fHeight.descent=0.0;
fHeight.leading=0.0;
// private_data->fPrivateFlags=0;
}
fFamilyID=be_plain_font->fFamilyID;
fStyleID=be_plain_font->fStyleID;
fSize=be_plain_font->fSize;
fShear=be_plain_font->fShear;
fRotation=be_plain_font->fRotation;
fSpacing=be_plain_font->fSpacing;
fEncoding=be_plain_font->fEncoding;
fFace=be_plain_font->fFace;
fHeight=be_plain_font->fHeight;
}
BFont::BFont(const BFont &font)
{
// private_data=new BFontPrivate();
fFamilyID=font.fFamilyID;
fStyleID=font.fStyleID;
fSize=font.fSize;
@@ -107,12 +217,10 @@ BFont::BFont(const BFont &font)
fEncoding=font.fEncoding;
fFace=font.fFace;
fHeight=font.fHeight;
// private_data->fPrivateFlags=font.private_data->fPrivateFlags;
}
BFont::BFont(const BFont *font)
{
// private_data=new BFontPrivate();
if(font)
{
fFamilyID=font->fFamilyID;
@@ -124,76 +232,69 @@ BFont::BFont(const BFont *font)
fEncoding=font->fEncoding;
fFace=font->fFace;
fHeight=font->fHeight;
// private_data->fPrivateFlags=font->private_data->fPrivateFlags;
}
else
{
if(be_plain_font)
{
fFamilyID=be_plain_font->fFamilyID;
fStyleID=be_plain_font->fStyleID;
fSize=be_plain_font->fSize;
fShear=be_plain_font->fShear;
fRotation=be_plain_font->fRotation;
fSpacing=be_plain_font->fSpacing;
fEncoding=be_plain_font->fEncoding;
fFace=be_plain_font->fFace;
fHeight=be_plain_font->fHeight;
// private_data->fPrivateFlags=be_plain_font->private_data->fPrivateFlags;
}
else
{
fFamilyID=0;
fStyleID=0;
fSize=0.0;
fShear=90.0;
fRotation=0.0;
fSpacing=B_CHAR_SPACING;
fEncoding=B_UNICODE_UTF8;
fFace=B_REGULAR_FACE;
fHeight.ascent=0.0;
fHeight.descent=0.0;
fHeight.leading=0.0;
// private_data->fPrivateFlags=0;
}
fFamilyID=be_plain_font->fFamilyID;
fStyleID=be_plain_font->fStyleID;
fSize=be_plain_font->fSize;
fShear=be_plain_font->fShear;
fRotation=be_plain_font->fRotation;
fSpacing=be_plain_font->fSpacing;
fEncoding=be_plain_font->fEncoding;
fFace=be_plain_font->fFace;
fHeight=be_plain_font->fHeight;
}
}
/* XXX TODO: R5 doesn't have a destructor, so we get linking errors when objects compiled with old headers with the new library
(but now we leak memory here)
BFont::~BFont(void)
{
delete private_data;
}
/*!
\brief Sets the font's family and style all at once
\param family Font family to set
\param style Font style to set
\return B_ERROR if family or style do not exist or if style does not belong to family.
*/
status_t BFont::SetFamilyAndStyle(const font_family family, const font_style style)
{
// R5 version always returns B_OK. That's a problem...
// TODO: implement
// TODO: find out what codes are returned by this function. Be Book says this returns nothing
// Query server for the appropriate family and style IDs and then return the
// appropriate value
return B_ERROR;
}
/*!
\brief Sets the font's family and style all at once
\param code Unique font identifier obtained from the server.
*/
void BFont::SetFamilyAndStyle(uint32 code)
{
fStyleID=code & 0xFFFF;
fFamilyID=(code & 0xFFFF0000) >> 16;
}
/*!
\brief Sets the font's family and face all at once
\param family Font family to set
\param face Font face to set.
\return B_ERROR if family does not exists or face is an invalid value.
To comply with the BeBook, this function will only set valid values - i.e. passing a
nonexistent family will cause only the face to be set. Additionally, if a particular
face does not exist in a family, the closest match will be chosen.
*/
status_t BFont::SetFamilyAndFace(const font_family family, uint16 face)
{
// TODO: find out what codes are returned by this function. Be Book says this returns nothing
fFace=face;
if(face & ( B_ITALIC_FACE | B_UNDERSCORE_FACE | B_NEGATIVE_FACE | B_OUTLINED_FACE
| B_STRIKEOUT_FACE | B_BOLD_FACE | B_REGULAR_FACE) != 0)
{
fFace=face;
}
// TODO: finish this function by adding the app_server Family query protocol code
if(family)
{
// Query server for family id for the specified family
}
// Query server for family id for the specified family
return B_OK;
}
@@ -284,6 +385,8 @@ uint32 BFont::Flags(void) const
font_direction BFont::Direction(void) const
{
// TODO: Query the server for the value
return B_FONT_LEFT_TO_RIGHT;
}
@@ -294,6 +397,12 @@ bool BFont::IsFixed(void) const
return false;
}
/*!
\brief Returns true if the font is fixed-width and contains both full and half-width characters
This was left unimplemented as of R5. It was a way to work with both Kanji and Roman
characters in the same fixed-width font.
*/
bool BFont::IsFullAndHalfFixed(void) const
{
return false;
@@ -438,7 +547,6 @@ BFont &BFont::operator=(const BFont &font)
fEncoding=font.fEncoding;
fFace=font.fFace;
fHeight=font.fHeight;
// private_data->fPrivateFlags=font.private_data->fPrivateFlags;
return *this;
}
@@ -455,7 +563,6 @@ bool BFont::operator==(const BFont &font) const
fHeight.ascent!=font.fHeight.ascent ||
fHeight.descent!=font.fHeight.descent ||
fHeight.leading!=font.fHeight.leading //||
// private_data->fPrivateFlags!=font.private_data->fPrivateFlags
)
return false;
return true;
@@ -474,7 +581,6 @@ bool BFont::operator!=(const BFont &font) const
fHeight.ascent!=font.fHeight.ascent ||
fHeight.descent!=font.fHeight.descent ||
fHeight.leading!=font.fHeight.leading //||
// private_data->fPrivateFlags!=font.private_data->fPrivateFlags
)
return true;
return false;