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Split the DirectWrite boilerplate to another C++ file so we can write a new font dialog with it, maybe.

This commit is contained in:
Pietro Gagliardi 2016-04-14 19:57:58 -04:00
parent edd9b2f133
commit 88e797e2be
4 changed files with 108 additions and 69 deletions
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3
windows/GNUfiles.mk
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@ -42,7 +42,8 @@ CFILES += \
windows/window.c
CXXFILES += \
windows/drawtext.cpp
windows/drawtext.cpp \
windows/dwrite.cpp
HFILES += \
windows/area.h \

75
windows/drawtext.cpp
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@ -1,7 +1,4 @@
// 22 december 2015
// Before we begin, you may be wondering why this file is C++.
// Simple: <dwrite.h> is C++ only! Thanks Microsoft!
// And unlike UI Automation which accidentally just forgets the 'struct' and 'enum' tags in places, <dwrite.h> is a full C++ header file, with class definitions and the use of __uuidof. Oh well :/
#include "uipriv_windows.h"
// notes:
@ -11,100 +8,44 @@
// - justficiation (how could I possibly be making this up?!)
// - vertical text (SERIOUSLY?! WHAT THE ACTUAL FUCK, MICROSOFT?!?!?!? DID YOU NOT THINK ABOUT THIS THE FIRST TIME, TRYING TO IMPROVE THE INTERNATIONALIZATION OF WINDOWS 7?!?!?! bonus: some parts of MSDN even say 8.1 and up only!)
static IDWriteFactory *dwfactory = NULL;
HRESULT initDrawText(void)
{
// TOOD use DWRITE_FACTORY_TYPE_ISOLATED instead?
return DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED,
__uuidof (IDWriteFactory),
(IUnknown **) (&dwfactory));
}
void uninitDrawText(void)
{
dwfactory->Release();
}
struct uiDrawFontFamilies {
IDWriteFontCollection *fonts;
WCHAR userLocale[LOCALE_NAME_MAX_LENGTH];
int userLocaleSuccess;
fontCollection *fc;
};
uiDrawFontFamilies *uiDrawListFontFamilies(void)
{
uiDrawFontFamilies *ff;
HRESULT hr;
struct uiDrawFontFamilies *ff;
ff = uiNew(uiDrawFontFamilies);
// always get the latest available font information
hr = dwfactory->GetSystemFontCollection(&(ff->fonts), TRUE);
if (hr != S_OK)
logHRESULT("error getting system font collection in uiDrawListFontFamilies()", hr);
ff->userLocaleSuccess = GetUserDefaultLocaleName(ff->userLocale, LOCALE_NAME_MAX_LENGTH);
ff = uiNew(struct uiDrawFontFamilies);
ff->fc = loadFontCollection();
return ff;
}
uintmax_t uiDrawFontFamiliesNumFamilies(uiDrawFontFamilies *ff)
{
return ff->fonts->GetFontFamilyCount();
return ff->fc->fonts->GetFontFamilyCount();
}
char *uiDrawFontFamiliesFamily(uiDrawFontFamilies *ff, uintmax_t n)
{
IDWriteFontFamily *family;
IDWriteLocalizedStrings *names;
UINT32 index;
BOOL exists;
UINT32 length;
WCHAR *wname;
char *name;
HRESULT hr;
hr = ff->fonts->GetFontFamily(n, &family);
hr = ff->fc->fonts->GetFontFamily(n, &family);
if (hr != S_OK)
logHRESULT("error getting font out of collection in uiDrawFontFamiliesFamily()", hr);
hr = family->GetFamilyNames(&names);
if (hr != S_OK)
logHRESULT("error getting names of font out in uiDrawFontFamiliesFamily()", hr);
// this is complex, but we ignore failure conditions to allow fallbacks
// 1) If the user locale name was successfully retrieved, try it
// 2) If the user locale name was not successfully retrieved, or that locale's string does not exist, or an error occurred, try L"en-us", the US English locale
// 3) And if that fails, assume the first one
// This algorithm is straight from MSDN: https://msdn.microsoft.com/en-us/library/windows/desktop/dd368214%28v=vs.85%29.aspx
// For step 2 to work, start by setting hr to S_OK and exists to FALSE.
// TODO does it skip step 2 entirely if step 1 fails? rewrite it to be a more pure conversion of the MSDN code?
hr = S_OK;
exists = FALSE;
if (ff->userLocaleSuccess != 0)
hr = names->FindLocaleName(ff->userLocale, &index, &exists);
if (hr != S_OK || (hr == S_OK && !exists))
hr = names->FindLocaleName(L"en-us", &index, &exists);
if (!exists)
index = 0;
hr = names->GetStringLength(index, &length);
if (hr != S_OK)
logHRESULT("error getting length of font name in uiDrawFontFamiliesFamily()", hr);
// GetStringLength() does not include the null terminator, but GetString() does
wname = (WCHAR *) uiAlloc((length + 1) * sizeof (WCHAR), "WCHAR[]");
hr = names->GetString(index, wname, length + 1);
if (hr != S_OK)
logHRESULT("error getting font name in uiDrawFontFamiliesFamily()", hr);
wname = fontCollectionFamilyName(ff->fc, family);
name = toUTF8(wname);
uiFree(wname);
names->Release();
family->Release();
return name;
}
void uiDrawFreeFontFamilies(uiDrawFontFamilies *ff)
{
ff->fonts->Release();
fontCollectionFree(ff->fc);
uiFree(ff);
}

82
windows/dwrite.cpp Normal file
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@ -0,0 +1,82 @@
// 14 april 2016
// Before we begin, you may be wondering why this file is C++.
// Simple: <dwrite.h> is C++ only! Thanks Microsoft!
// And unlike UI Automation which accidentally just forgets the 'struct' and 'enum' tags in places, <dwrite.h> is a full C++ header file, with class definitions and the use of __uuidof. Oh well :/
#include "uipriv_windows.h"
IDWriteFactory *dwfactory = NULL;
HRESULT initDrawText(void)
{
// TOOD use DWRITE_FACTORY_TYPE_ISOLATED instead?
return DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED,
__uuidof (IDWriteFactory),
(IUnknown **) (&dwfactory));
}
void uninitDrawText(void)
{
dwfactory->Release();
}
fontCollection *loadFontCollection(void)
{
fontCollection *fc;
HRESULT hr;
fc = uiNew(fontCollection);
// always get the latest available font information
hr = dwfactory->GetSystemFontCollection(&(fc->fonts), TRUE);
if (hr != S_OK)
logHRESULT("error getting system font collection in loadFontCollection()", hr);
fc->userLocaleSuccess = GetUserDefaultLocaleName(fc->userLocale, LOCALE_NAME_MAX_LENGTH);
return fc;
}
WCHAR *fontCollectionFamilyName(fontCollection *fc, IDWriteFontFamily *family)
{
IDWriteLocalizedStrings *names;
UINT32 index;
BOOL exists;
UINT32 length;
WCHAR *wname;
HRESULT hr;
hr = family->GetFamilyNames(&names);
if (hr != S_OK)
logHRESULT("error getting names of font out in fontCollectionFamilyName()", hr);
// this is complex, but we ignore failure conditions to allow fallbacks
// 1) If the user locale name was successfully retrieved, try it
// 2) If the user locale name was not successfully retrieved, or that locale's string does not exist, or an error occurred, try L"en-us", the US English locale
// 3) And if that fails, assume the first one
// This algorithm is straight from MSDN: https://msdn.microsoft.com/en-us/library/windows/desktop/dd368214%28v=vs.85%29.aspx
// For step 2 to work, start by setting hr to S_OK and exists to FALSE.
// TODO does it skip step 2 entirely if step 1 fails? rewrite it to be a more pure conversion of the MSDN code?
hr = S_OK;
exists = FALSE;
if (fc->userLocaleSuccess != 0)
hr = names->FindLocaleName(fc->userLocale, &index, &exists);
if (hr != S_OK || (hr == S_OK && !exists))
hr = names->FindLocaleName(L"en-us", &index, &exists);
if (!exists)
index = 0;
hr = names->GetStringLength(index, &length);
if (hr != S_OK)
logHRESULT("error getting length of font name in fontCollectionFamilyName()", hr);
// GetStringLength() does not include the null terminator, but GetString() does
wname = (WCHAR *) uiAlloc((length + 1) * sizeof (WCHAR), "WCHAR[]");
hr = names->GetString(index, wname, length + 1);
if (hr != S_OK)
logHRESULT("error getting font name in fontCollectionFamilyName()", hr);
names->Release();
return wname;
}
void fontCollectionFree(fontCollection *fc)
{
fc->fonts->Release();
uiFree(fc);
}

17
windows/uipriv_windows.h
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@ -135,9 +135,24 @@ extern ID2D1HwndRenderTarget *makeHWNDRenderTarget(HWND hwnd);
extern uiDrawContext *newContext(ID2D1RenderTarget *);
extern void freeContext(uiDrawContext *);
// drawtext.cpp
// dwrite.cpp
#ifdef __cplusplus
extern IDWriteFactory *dwfactory;
#endif
extern HRESULT initDrawText(void);
extern void uninitDrawText(void);
#ifdef __cplusplus
struct fontCollection {
IDWriteFontCollection *fonts;
WCHAR userLocale[LOCALE_NAME_MAX_LENGTH];
int userLocaleSuccess;
};
extern fontCollection *loadFontCollection(void);
extern WCHAR *fontCollectionFamilyName(fontCollection *fc, IDWriteFontFamily *family);
extern void fontCollectionFree(fontCollection *fc);
#endif
// drawtext.cpp
extern void doDrawText(ID2D1RenderTarget *rt, ID2D1Brush *black, double x, double y, uiDrawTextLayout *layout);
#ifdef __cplusplus