jdk/src/windows/native/sun/windows/awt_Font.h - edge/openjdk - Git at Google

 /*
  * Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */

 #ifndef AWT_FONT_H
 #define AWT_FONT_H

 #include "awt.h"
 #include "awt_Object.h"

 #include "java_awt_Font.h"
 #include "sun_awt_windows_WFontMetrics.h"
 #include "sun_awt_FontDescriptor.h"
 #include "sun_awt_PlatformFont.h"


 /************************************************************************
  * AwtFont utilities
  */

 extern jboolean IsMultiFont(JNIEnv *env, jobject obj);

 #define GET_PLATFORMFONT(font)\
     (env->CallObjectMethod(env, font, AwtFont::peerMID))


 /************************************************************************
  * AwtFont class
  */

 class AwtFont : public AwtObject {
 public:

     /* int[] width field for sun.awt.windows.WFontDescriptor */
     static jfieldID widthsID;

     /* int fields for sun.awt.windows.WFontDescriptor */
     static jfieldID ascentID;
     static jfieldID descentID;
     static jfieldID leadingID;
     static jfieldID heightID;
     static jfieldID maxAscentID;
     static jfieldID maxDescentID;
     static jfieldID maxHeightID;
     static jfieldID maxAdvanceID;

     /* sun.awt.FontDescriptor fontDescriptor field of sun.awt.CharsetString */
     static jfieldID fontDescriptorID;
     /* java.lang.String charsetString field of sun.awt.CharsetString */
     static jfieldID charsetStringID;

     /* java.lang.String nativeName field of sun.awt.FontDescriptor*/
     static jfieldID nativeNameID;
     /* boolean useUnicode field of sun.awt.FontDescriptor*/
     static jfieldID useUnicodeID;

     /* long field pData of java.awt.Font */
     static jfieldID pDataID;
     /* java.awt.peer.FontPeer field peer of java.awt.Font */
     static jmethodID peerMID;
     /* java.lang.String name field of java.awt.Font */
     static jfieldID nameID;
     /* int size field of java.awt.Font */
     static jfieldID sizeID;
     /* int style field of java.awt.Font */
     static jfieldID styleID;

     /* java.awt.Font peer field of java.awt.FontMetrics */
     static jfieldID fontID;

     /* sun.awt.FontConfiguration fontConfig field of sun.awt.PlatformFont */
     static jfieldID fontConfigID;
     /* FontDescriptor[] componentFonts field of sun.awt.PlatformFont */
     static jfieldID componentFontsID;

     /* String textComponentFontName field of sun.awt.windows.WFontPeer */
     static jfieldID textComponentFontNameID;

     /* String fontName field of sun.awt.windows.WDefaultFontCharset fields */
     static jfieldID fontNameID;

     static jmethodID makeConvertedMultiFontStringMID;

     /* java.awt.Font methods */
     static jmethodID getFontMID;

     /* java.awt.FontMetrics methods */
     static jmethodID getHeightMID;

     /*
      * The argument is used to determine how many handles of
      * Windows font the instance has.
      */
     AwtFont(int num, JNIEnv *env, jobject javaFont);
     ~AwtFont();    /* Releases all resources */

     virtual void Dispose();

     /*
      * Access methods
      */
     INLINE int GetHFontNum()     { return m_hFontNum; }
     INLINE HFONT GetHFont(int i) {
         DASSERT(m_hFont[i] != NULL);
         return m_hFont[i];
     }

     /* Used to keep English version unchanged as much as possiple. */
     INLINE HFONT GetHFont() {
         DASSERT(m_hFont[0] != NULL);
         return m_hFont[0];
     }
     INLINE int GetInputHFontIndex() { return m_textInput; }

     INLINE void SetAscent(int ascent) { m_ascent = ascent; }
     INLINE int GetAscent()           { return m_ascent; }
     INLINE int GetOverhang()         { return m_overhang; }

     /*
      * Font methods
      */

     /*
      * Returns the AwtFont object associated with the pFontJavaObject.
      * If none exists, create one.
      */
     static AwtFont* GetFont(JNIEnv *env, jobject font,
                             jint angle=0, jfloat awScale=1.0f);

     /*
      * Creates the specified font.  name names the font.  style is a bit
      * vector that describes the style of the font.  height is the point
      * size of the font.
      */
     static AwtFont* Create(JNIEnv *env, jobject font,
                            jint angle = 0, jfloat awScale=1.0f);
     static HFONT CreateHFont(WCHAR* name, int style, int height,
                              int angle = 0, float awScale=1.0f);

     static void Cleanup();

     /*
      * FontMetrics methods
      */

     /*
      * Loads the metrics of the associated font.  See Font.GetFont for
      * purpose of pWS.  (Also, client should provide Font java object
      * instead of getting it from the FontMetrics instance variable.)
      */
     static void LoadMetrics(JNIEnv *env, jobject fontMetrics);

     /* Returns the AwtFont associated with this metrics. */
     static AwtFont* GetFontFromMetrics(JNIEnv *env, jobject fontMetrics);

     /*
      * Sets the ascent of the font.  This member should be called if
      * font->m_nAscent < 0.
      */
     static void SetupAscent(AwtFont* font);

     /*
      * Determines the average dimension of the character in the
      * specified font 'font' and multiplies it by the specified number
      * of rows and columns.  'font' can be a temporary object.
      */
     static SIZE TextSize(AwtFont* font, int columns, int rows);

     /*
      * If 'font' is NULL, the SYSTEM_FONT is used to compute the size.
      * 'font' can be a temporary object.
      */
     static int getFontDescriptorNumber(JNIEnv *env, jobject font,
                                        jobject fontDescriptor);

     /*
      * 'font' is of type java.awt.Font.
      */
     static SIZE DrawStringSize_sub(jstring str, HDC hDC, jobject font,
                                    long x, long y, BOOL draw,
                                    UINT codePage = 0);

     INLINE static SIZE drawMFStringSize(HDC hDC, jobject font,
                                         jstring str, long x, long y,
                                         UINT codePage = 0)
     {
         return DrawStringSize_sub(str, hDC, font, x, y, TRUE , codePage);
     }


     INLINE static SIZE getMFStringSize(HDC hDC, jobject font, jstring str,
                                        UINT codePage = 0)
     {
         return DrawStringSize_sub(str, hDC, font, 0, 0, FALSE, codePage);
     }


     INLINE static long getMFStringWidth(HDC hDC, jobject font,
                                             jstring str) {
         return getMFStringSize(hDC, font, str).cx;
     }

     INLINE static void drawMFString(HDC hDC, jobject font, jstring str,
                                     long x, long y, UINT codePage = 0)
     {
         DrawStringSize_sub(str, hDC, font, x, y, TRUE, codePage);
     }

     INLINE static jobjectArray GetComponentFonts(JNIEnv *env,
                                                      jobject font) {
       jobject platformFont = env->CallObjectMethod(font, AwtFont::peerMID);
       if (platformFont != NULL) {
           jobjectArray result =
               (jobjectArray)(env->GetObjectField(platformFont,
                                                  AwtFont::componentFontsID));
           env->DeleteLocalRef(platformFont);
           return result;
       }
       return NULL;
     }

    /*
     * Variables
     */

 private:
     /* The array of associated font handles */
     HFONT* m_hFont;
     /* The number of handles. */
     int    m_hFontNum;
     /* The index of the handle used to be set to AwtTextComponent. */
     int    m_textInput;
     /* The ascent of this font. */
     int m_ascent;
     /* The overhang, or amount added to a string's width, of this font. */
     int m_overhang;
     /* angle of text rotation in 10'ths of a degree*/
     int textAngle;
     /* average width scale factor to be applied */
     float awScale;
 };


 class AwtFontCache {
 private:
     class Item {
     public:
         Item(const WCHAR* s, HFONT f, Item* n = NULL);
         ~Item();

         WCHAR*      name;
         HFONT       font;
         Item*       next;
         DWORD       refCount;   /*  The same HFONT can be associated with
                                     multiple Java objects.*/
     };

 public:
     AwtFontCache() { m_head = NULL; }
     void    Add(WCHAR* name, HFONT font);
     HFONT   Lookup(WCHAR* name);
     BOOL    Search(HFONT font);
     void    Remove(HFONT font);
     void    Clear();
     void    IncRefCount(HFONT hFont);
     LONG    IncRefCount(Item* item);
     LONG    DecRefCount(Item* item);


     Item* m_head;
 };

 #define GET_FONT(target, OBJ) \
     ((jobject)env->CallObjectMethod(target, AwtComponent::getFontMID))

 #endif /* AWT_FONT_H */
	/*
	* Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	#ifndef AWT_FONT_H
	#define AWT_FONT_H

	#include "awt.h"
	#include "awt_Object.h"

	#include "java_awt_Font.h"
	#include "sun_awt_windows_WFontMetrics.h"
	#include "sun_awt_FontDescriptor.h"
	#include "sun_awt_PlatformFont.h"


	/************************************************************************
	* AwtFont utilities
	*/

	extern jboolean IsMultiFont(JNIEnv *env, jobject obj);

	#define GET_PLATFORMFONT(font)\
	(env->CallObjectMethod(env, font, AwtFont::peerMID))


	/************************************************************************
	* AwtFont class
	*/

	class AwtFont : public AwtObject {
	public:

	/* int[] width field for sun.awt.windows.WFontDescriptor */
	static jfieldID widthsID;

	/* int fields for sun.awt.windows.WFontDescriptor */
	static jfieldID ascentID;
	static jfieldID descentID;
	static jfieldID leadingID;
	static jfieldID heightID;
	static jfieldID maxAscentID;
	static jfieldID maxDescentID;
	static jfieldID maxHeightID;
	static jfieldID maxAdvanceID;

	/* sun.awt.FontDescriptor fontDescriptor field of sun.awt.CharsetString */
	static jfieldID fontDescriptorID;
	/* java.lang.String charsetString field of sun.awt.CharsetString */
	static jfieldID charsetStringID;

	/* java.lang.String nativeName field of sun.awt.FontDescriptor*/
	static jfieldID nativeNameID;
	/* boolean useUnicode field of sun.awt.FontDescriptor*/
	static jfieldID useUnicodeID;

	/* long field pData of java.awt.Font */
	static jfieldID pDataID;
	/* java.awt.peer.FontPeer field peer of java.awt.Font */
	static jmethodID peerMID;
	/* java.lang.String name field of java.awt.Font */
	static jfieldID nameID;
	/* int size field of java.awt.Font */
	static jfieldID sizeID;
	/* int style field of java.awt.Font */
	static jfieldID styleID;

	/* java.awt.Font peer field of java.awt.FontMetrics */
	static jfieldID fontID;

	/* sun.awt.FontConfiguration fontConfig field of sun.awt.PlatformFont */
	static jfieldID fontConfigID;
	/* FontDescriptor[] componentFonts field of sun.awt.PlatformFont */
	static jfieldID componentFontsID;

	/* String textComponentFontName field of sun.awt.windows.WFontPeer */
	static jfieldID textComponentFontNameID;

	/* String fontName field of sun.awt.windows.WDefaultFontCharset fields */
	static jfieldID fontNameID;

	static jmethodID makeConvertedMultiFontStringMID;

	/* java.awt.Font methods */
	static jmethodID getFontMID;

	/* java.awt.FontMetrics methods */
	static jmethodID getHeightMID;

	/*
	* The argument is used to determine how many handles of
	* Windows font the instance has.
	*/
	AwtFont(int num, JNIEnv *env, jobject javaFont);
	~AwtFont(); /* Releases all resources */

	virtual void Dispose();

	/*
	* Access methods
	*/
	INLINE int GetHFontNum() { return m_hFontNum; }
	INLINE HFONT GetHFont(int i) {
	DASSERT(m_hFont[i] != NULL);
	return m_hFont[i];
	}

	/* Used to keep English version unchanged as much as possiple. */
	INLINE HFONT GetHFont() {
	DASSERT(m_hFont[0] != NULL);
	return m_hFont[0];
	}
	INLINE int GetInputHFontIndex() { return m_textInput; }

	INLINE void SetAscent(int ascent) { m_ascent = ascent; }
	INLINE int GetAscent() { return m_ascent; }
	INLINE int GetOverhang() { return m_overhang; }

	/*
	* Font methods
	*/

	/*
	* Returns the AwtFont object associated with the pFontJavaObject.
	* If none exists, create one.
	*/
	static AwtFont* GetFont(JNIEnv *env, jobject font,
	jint angle=0, jfloat awScale=1.0f);

	/*
	* Creates the specified font. name names the font. style is a bit
	* vector that describes the style of the font. height is the point
	* size of the font.
	*/
	static AwtFont* Create(JNIEnv *env, jobject font,
	jint angle = 0, jfloat awScale=1.0f);
	static HFONT CreateHFont(WCHAR* name, int style, int height,
	int angle = 0, float awScale=1.0f);

	static void Cleanup();

	/*
	* FontMetrics methods
	*/

	/*
	* Loads the metrics of the associated font. See Font.GetFont for
	* purpose of pWS. (Also, client should provide Font java object
	* instead of getting it from the FontMetrics instance variable.)
	*/
	static void LoadMetrics(JNIEnv *env, jobject fontMetrics);

	/* Returns the AwtFont associated with this metrics. */
	static AwtFont* GetFontFromMetrics(JNIEnv *env, jobject fontMetrics);

	/*
	* Sets the ascent of the font. This member should be called if
	* font->m_nAscent < 0.
	*/
	static void SetupAscent(AwtFont* font);

	/*
	* Determines the average dimension of the character in the
	* specified font 'font' and multiplies it by the specified number
	* of rows and columns. 'font' can be a temporary object.
	*/
	static SIZE TextSize(AwtFont* font, int columns, int rows);

	/*
	* If 'font' is NULL, the SYSTEM_FONT is used to compute the size.
	* 'font' can be a temporary object.
	*/
	static int getFontDescriptorNumber(JNIEnv *env, jobject font,
	jobject fontDescriptor);

	/*
	* 'font' is of type java.awt.Font.
	*/
	static SIZE DrawStringSize_sub(jstring str, HDC hDC, jobject font,
	long x, long y, BOOL draw,
	UINT codePage = 0);

	INLINE static SIZE drawMFStringSize(HDC hDC, jobject font,
	jstring str, long x, long y,
	UINT codePage = 0)
	{
	return DrawStringSize_sub(str, hDC, font, x, y, TRUE , codePage);
	}


	INLINE static SIZE getMFStringSize(HDC hDC, jobject font, jstring str,
	UINT codePage = 0)
	{
	return DrawStringSize_sub(str, hDC, font, 0, 0, FALSE, codePage);
	}


	INLINE static long getMFStringWidth(HDC hDC, jobject font,
	jstring str) {
	return getMFStringSize(hDC, font, str).cx;
	}

	INLINE static void drawMFString(HDC hDC, jobject font, jstring str,
	long x, long y, UINT codePage = 0)
	{
	DrawStringSize_sub(str, hDC, font, x, y, TRUE, codePage);
	}

	INLINE static jobjectArray GetComponentFonts(JNIEnv *env,
	jobject font) {
	jobject platformFont = env->CallObjectMethod(font, AwtFont::peerMID);
	if (platformFont != NULL) {
	jobjectArray result =
	(jobjectArray)(env->GetObjectField(platformFont,
	AwtFont::componentFontsID));
	env->DeleteLocalRef(platformFont);
	return result;
	}
	return NULL;
	}

	/*
	* Variables
	*/

	private:
	/* The array of associated font handles */
	HFONT* m_hFont;
	/* The number of handles. */
	int m_hFontNum;
	/* The index of the handle used to be set to AwtTextComponent. */
	int m_textInput;
	/* The ascent of this font. */
	int m_ascent;
	/* The overhang, or amount added to a string's width, of this font. */
	int m_overhang;
	/* angle of text rotation in 10'ths of a degree*/
	int textAngle;
	/* average width scale factor to be applied */
	float awScale;
	};



	class AwtFontCache {
	private:
	class Item {
	public:
	Item(const WCHAR* s, HFONT f, Item* n = NULL);
	~Item();

	WCHAR* name;
	HFONT font;
	Item* next;
	DWORD refCount; /* The same HFONT can be associated with
	multiple Java objects.*/
	};

	public:
	AwtFontCache() { m_head = NULL; }
	void Add(WCHAR* name, HFONT font);
	HFONT Lookup(WCHAR* name);
	BOOL Search(HFONT font);
	void Remove(HFONT font);
	void Clear();
	void IncRefCount(HFONT hFont);
	LONG IncRefCount(Item* item);
	LONG DecRefCount(Item* item);


	Item* m_head;
	};

	#define GET_FONT(target, OBJ) \
	((jobject)env->CallObjectMethod(target, AwtComponent::getFontMID))

	#endif /* AWT_FONT_H */