defaultlcdui.c

用于移动设备上的java虚拟机源代码

    KNI_GetObjectClass(thisClass, gHandle);

    KNI_TRANSLATE(thisClass, x, y, gHandle);

    LCDUIfillRect(KNI_PIXEL(thisClass, gHandle),
		  KNI_CLIP(thisClass, gHandle, myClip, cHandle),
		  KNI_IMAGEDST(thisClass, gHandle, iHandle, NULL), 
		  KNI_LINESTYLE(thisClass, gHandle),
		  x, y, w, h);

    KNI_EndHandles();
    KNI_ReturnVoid();
}

/*=========================================================================
 * FUNCTION:      drawRoundRect(IIIIII)V
 * CLASS:         javax.microedition.lcdui.Graphics
 * TYPE:          virtual native function
 * OVERVIEW:      Draws the outline of the specified rounded corner
 *                 rectangle using the current color and stroke style.
 * INTERFACE (operand stack manipulation):
 *   parameters:  x          the x coordinate of the rectangle to be drawn
 *                y          the y coordinate of the rectangle to be drawn
 *                width      the width of the rectangle to be drawn
 *                height     the height of the rectangle to be drawn
 *                arcWidth   the horizontal diameter of the arc at the
 *                            four corners
 *                arcHeight  the vertical diameter of the arc at the
 *                            four corners
 *   returns:     <nothing>
 *=======================================================================*/
KNIEXPORT KNI_RETURNTYPE_VOID
Java_javax_microedition_lcdui_Graphics_drawRoundRect() {
    int arcHeight = KNI_GetParameterAsInt(6);
    int  arcWidth = KNI_GetParameterAsInt(5);
    int         h = KNI_GetParameterAsInt(4);
    int         w = KNI_GetParameterAsInt(3);
    int         y = KNI_GetParameterAsInt(2);
    int         x = KNI_GetParameterAsInt(1);
    jshort myClip[4]; /* Defined in Graphics.java as 4 shorts */

    KNI_StartHandles(4);
    KNI_DeclareHandle(thisClass);
    KNI_DeclareHandle(gHandle);
    KNI_DeclareHandle(cHandle);
    KNI_DeclareHandle(iHandle);

    KNI_GetParameterAsObject(0, thisClass);
    KNI_GetObjectClass(thisClass, gHandle);

    KNI_TRANSLATE(thisClass, x, y, gHandle);

    LCDUIdrawRoundRect(KNI_PIXEL(thisClass, gHandle),
		       KNI_CLIP(thisClass, gHandle, myClip, cHandle),
		       KNI_IMAGEDST(thisClass, gHandle, iHandle, NULL), 
		       KNI_LINESTYLE(thisClass, gHandle),
		       x, y, w, h, arcWidth, arcHeight);

    KNI_EndHandles();
    KNI_ReturnVoid();
}

/*=========================================================================
 * FUNCTION:      fillRoundRect(IIIIII)V
 * CLASS:         javax.microedition.lcdui.Graphics
 * TYPE:          virtual native function
 * OVERVIEW:      Fills the specified rounded corner rectangle using the
 *                 current color.
 * INTERFACE (operand stack manipulation):
 *   parameters:  x          the x coordinate of the rectangle to be filled
 *                y          the y coordinate of the rectangle to be filled
 *                width      the width of the rectangle to be filled
 *                height     the height of the rectangle to be filled
 *                arcWidth   the horizontal diameter of the arc at the
 *                            four corners
 *                arcHeight  the vertical diameter of the arc at the
 *                            four corners
 *   returns:     <nothing>
 *=======================================================================*/
KNIEXPORT KNI_RETURNTYPE_VOID
Java_javax_microedition_lcdui_Graphics_fillRoundRect() {
    int arcHeight = KNI_GetParameterAsInt(6);
    int  arcWidth = KNI_GetParameterAsInt(5);
    int         h = KNI_GetParameterAsInt(4);
    int         w = KNI_GetParameterAsInt(3);
    int         y = KNI_GetParameterAsInt(2);
    int         x = KNI_GetParameterAsInt(1);
    jshort myClip[4]; /* Defined in Graphics.java as 4 shorts */

    KNI_StartHandles(4);
    KNI_DeclareHandle(thisClass);
    KNI_DeclareHandle(gHandle);
    KNI_DeclareHandle(cHandle);
    KNI_DeclareHandle(iHandle);

    KNI_GetParameterAsObject(0, thisClass);
    KNI_GetObjectClass(thisClass, gHandle);

    KNI_TRANSLATE(thisClass, x, y, gHandle);

    LCDUIfillRoundRect(KNI_PIXEL(thisClass, gHandle),
		       KNI_CLIP(thisClass, gHandle, myClip, cHandle),
		       KNI_IMAGEDST(thisClass, gHandle, iHandle, NULL), 
		       KNI_LINESTYLE(thisClass, gHandle),
		       x, y, w, h, arcWidth, arcHeight);

    KNI_EndHandles();
    KNI_ReturnVoid();
}

/*=========================================================================
 * FUNCTION:      drawArc(IIIIII)V
 * CLASS:         javax.microedition.lcdui.Graphics
 * TYPE:          virtual native function
 * OVERVIEW:      Draws the outline of a circular or elliptical arc
 *                 covering the specified rectangle, using the current
 *                 color and stroke style.
 * INTERFACE (operand stack manipulation):
 *   parameters:  x            the x coordinate of the upper-left corner
 *                              of the arc to be drawn
 *                y            the y coordinate of the upper-left corner
 *                              of the arc to be drawn
 *                width        the width of the arc to be drawn
 *                height       the height of the arc to be drawn
 *                startAngle   the beginning angle.
 *                arcAngle     the angular extent of the arc, relative to
 *                              the start angle.
 *   returns:     <nothing>
 *=======================================================================*/
KNIEXPORT KNI_RETURNTYPE_VOID
Java_javax_microedition_lcdui_Graphics_drawArc() {
    int   arcAngle = KNI_GetParameterAsInt(6);
    int startAngle = KNI_GetParameterAsInt(5);
    int          h = KNI_GetParameterAsInt(4);
    int          w = KNI_GetParameterAsInt(3);
    int          y = KNI_GetParameterAsInt(2);
    int          x = KNI_GetParameterAsInt(1);
    jshort myClip[4]; /* Defined in Graphics.java as 4 shorts */

    KNI_StartHandles(4);
    KNI_DeclareHandle(thisClass);
    KNI_DeclareHandle(gHandle);
    KNI_DeclareHandle(cHandle);
    KNI_DeclareHandle(iHandle);

    KNI_GetParameterAsObject(0, thisClass);
    KNI_GetObjectClass(thisClass, gHandle);

    KNI_TRANSLATE(thisClass, x, y, gHandle);

    if (arcAngle < 0) {
        startAngle += arcAngle;
        arcAngle = -arcAngle;
    }
    startAngle = (startAngle + 360) % 360;

    LCDUIdrawArc(KNI_PIXEL(thisClass, gHandle),
		 KNI_CLIP(thisClass, gHandle, myClip, cHandle),
		 KNI_IMAGEDST(thisClass, gHandle, iHandle, NULL), 
		 KNI_LINESTYLE(thisClass, gHandle),
		 x, y, w, h, startAngle, arcAngle);

    KNI_EndHandles();
    KNI_ReturnVoid();
}

/*=========================================================================
 * FUNCTION:      fillArc(IIIIII)V
 * CLASS:         javax.microedition.lcdui.Graphics
 * TYPE:          virtual native function
 * OVERVIEW:      Draws the outline of a circular or elliptical arc
 *                 covering the specified rectangle, using the current
 *                 color and stroke style.
 * INTERFACE (operand stack manipulation):
 *   parameters:  x            the x coordinate of the upper-left corner
 *                              of the arc to be filled
 *                y            the y coordinate of the upper-left corner
 *                              of the arc to be filled
 *                width        the width of the arc to be filled
 *                height       the height of the arc to be filled
 *                startAngle   the beginning angle.
 *                arcAngle     the angular extent of the arc, relative to
 *                              the start angle.
 *   returns:     <nothing>
 *=======================================================================*/
KNIEXPORT KNI_RETURNTYPE_VOID
Java_javax_microedition_lcdui_Graphics_fillArc() {
    int   arcAngle = KNI_GetParameterAsInt(6);
    int startAngle = KNI_GetParameterAsInt(5);
    int          h = KNI_GetParameterAsInt(4);
    int          w = KNI_GetParameterAsInt(3);
    int          y = KNI_GetParameterAsInt(2);
    int          x = KNI_GetParameterAsInt(1);
    jshort myClip[4]; /* Defined in Graphics.java as 4 shorts */

    KNI_StartHandles(4);
    KNI_DeclareHandle(thisClass);
    KNI_DeclareHandle(gHandle);
    KNI_DeclareHandle(cHandle);
    KNI_DeclareHandle(iHandle);

    KNI_GetParameterAsObject(0, thisClass);
    KNI_GetObjectClass(thisClass, gHandle);

    KNI_TRANSLATE(thisClass, x, y, gHandle);

    if (arcAngle < 0) {
        startAngle += arcAngle;
        arcAngle = -arcAngle;
    }
    startAngle = (startAngle + 360) % 360;

    LCDUIfillArc(KNI_PIXEL(thisClass, gHandle),
		 KNI_CLIP(thisClass, gHandle, myClip, cHandle),
		 KNI_IMAGEDST(thisClass, gHandle, iHandle, NULL), 
		 KNI_LINESTYLE(thisClass, gHandle),
		 x, y, w, h, startAngle, arcAngle);

    KNI_EndHandles();
    KNI_ReturnVoid();
}

/*=========================================================================
 * FUNCTION:      fillTriangle(IIIIII)V
 * CLASS:         javax.microedition.lcdui.Graphics
 * TYPE:          virtual native function
 * OVERVIEW:      Draws a filled triangle connecting the given points
 *                using the current color and stroke style.
 *
 * INTERFACE (operand stack manipulation):
 *   parameters:  x1    the x coordinate of the first vertice
 *                y1    the y coordinate of the first vertice
 *                x2    the x coordinate of the second vertice
 *                y2    the y coordinate of the second vertice
 *                x3    the x coordinate of the third vertice
 *                y3    the y coordinate of the third vertice
 *   returns:     <nothing>
 *=======================================================================*/
KNIEXPORT KNI_RETURNTYPE_VOID
Java_javax_microedition_lcdui_Graphics_fillTriangle(KNITRAPS) {
    int         y3 = KNI_GetParameterAsInt(6);
    int         x3 = KNI_GetParameterAsInt(5);
    int         y2 = KNI_GetParameterAsInt(4);
    int         x2 = KNI_GetParameterAsInt(3);
    int         y1 = KNI_GetParameterAsInt(2);
    int         x1 = KNI_GetParameterAsInt(1);
    jshort myClip[4]; /* Defined in Graphics.java as 4 shorts */

    KNI_StartHandles(4);
    KNI_DeclareHandle(thisClass);
    KNI_DeclareHandle(gHandle);
    KNI_DeclareHandle(cHandle);
    KNI_DeclareHandle(iHandle);

    KNI_GetParameterAsObject(0, thisClass);
    KNI_GetObjectClass(thisClass, gHandle);

    KNI_TRANSLATE(thisClass, x1, y1, gHandle);
    KNI_TRANSLATE(thisClass, x2, y2, gHandle);
    KNI_TRANSLATE(thisClass, x3, y3, gHandle);

    LCDUIfillTriangle(KNI_PIXEL(thisClass, gHandle),
		      KNI_CLIP(thisClass, gHandle, myClip, cHandle),
		      KNI_IMAGEDST(thisClass, gHandle, iHandle, NULL), 
		      KNI_LINESTYLE(thisClass, gHandle),
		      x1, y1, x2, y2, x3, y3);

    KNI_EndHandles();
    KNI_ReturnVoid();
}

/*=========================================================================
 * FUNCTION:      drawString(Ljava/lang/String;III)V
 * CLASS:         javax.microedition.lcdui.Graphics
 * TYPE:          virtual native function
 * OVERVIEW:      Draws the specified String using the current font
 *                 and color.
 * INTERFACE (operand stack manipulation):
 *   parameters:  str      the String to be drawn
 *                x        the x coordinate of the anchor point
 *                y        the y coordinate of the anchor point
 *                anchor   the anchor point for positioning the text
 *   returns:     <nothing>
 *=======================================================================*/
KNIEXPORT KNI_RETURNTYPE_VOID
Java_javax_microedition_lcdui_Graphics_drawString() {
    int anchor = KNI_GetParameterAsInt(4);
    int      y = KNI_GetParameterAsInt(3);
    int      x = KNI_GetParameterAsInt(2);
    int strLen;

    KNI_StartHandles(7);

    KNI_DeclareHandle(str);
    KNI_DeclareHandle(thisClass);
    KNI_DeclareHandle(font);
    KNI_DeclareHandle(gHandle);
    KNI_DeclareHandle(fHandle);
    KNI_DeclareHandle(cHandle);
    KNI_DeclareHandle(iHandle);

    KNI_GetParameterAsObject(1, str);
    KNI_GetParameterAsObject(0, thisClass);

    strLen = KNI_GetStringLength(str);
    if (strLen < 0) {
        KNI_ThrowNew("java/lang/NullPointerException", "");
    } else if (!checkAnchor(anchor, VCENTER)) {
        KNI_ThrowNew("java/lang/IllegalArgumentException", "");
    } else {
	unicode* chars;
	jshort   myClip[4]; /* Defined in Graphics.java as 4 shorts */
	int      FONTPARAMS;

	chars = (unicode*)midpMalloc(strLen<<1);

    if (chars == NULL) {
        KNI_ThrowNew("java/lang/OutOfMemoryError", "");
    } else {

	    KNI_GetObjectClass(thisClass, gHandle);

	    KNI_FONT(thisClass, gHandle, font);
	    KNI_GetObjectClass(font, fHandle);

	    DECLARE_KNI_FONT_PARAMS(font, fHandle);

        KNI_TRANSLATE(thisClass, x, y, gHandle);

	    KNI_GetStringRegion(str, 0, strLen, chars);
	    LCDUIdrawChars(KNI_PIXEL(thisClass, gHandle),
		           KNI_CLIP(thisClass, gHandle, myClip, cHandle),
		           KNI_IMAGEDST(thisClass, gHandle, iHandle, NULL), 
		           KNI_LINESTYLE(thisClass, gHandle),
		           FONTPARAMS, x, y, anchor, chars, strLen);

	    midpFree(chars);
        }
    }

    KNI_EndHandles();
    KNI_ReturnVoid();
}

/*=========================================================================
 * FUNCTION:      drawSubString(Ljava/lang/String;IIIII)V
 * CLASS:         javax.microedition.lcdui.Graphics
 * TYPE:          virtual native function
 * OVERVIEW:      Draws the specified String using the current font
 *                 and color.
 * INTERFACE (operand stack manipulation):
 *   parameters:  str      the String to be drawn
 *                offset   zero-based index of first character in the
 *                          substring
 *                length   length of the substring
 *                x        the x coordinate of the anchor point
 *                y        the y coordinate of the anchor point
 *                anchor   the anchor point for positioning the text
 *   returns:     <nothing>