Update/add Go functions

raylib/rtext.go

@@ -0,0 +1,150 @@
+package rl
+
+/*
+#include "raylib.h"
+#include <stdlib.h>
+*/
+import "C"
+import "unsafe"
+
+// cptr returns C pointer
+func (c *GlyphInfo) cptr() *C.GlyphInfo {
+	return (*C.GlyphInfo)(unsafe.Pointer(c))
+}
+
+// cptr returns C pointer
+func (s *Font) cptr() *C.Font {
+	return (*C.Font)(unsafe.Pointer(s))
+}
+
+// GetFontDefault - Get the default Font
+func GetFontDefault() Font {
+	ret := C.GetFontDefault()
+	v := newFontFromPointer(unsafe.Pointer(&ret))
+	return v
+}
+
+// LoadFont - Load a Font image into GPU memory (VRAM)
+func LoadFont(fileName string) Font {
+	cfileName := C.CString(fileName)
+	defer C.free(unsafe.Pointer(cfileName))
+	ret := C.LoadFont(cfileName)
+	v := newFontFromPointer(unsafe.Pointer(&ret))
+	return v
+}
+
+// LoadFontEx - Load Font from file with extended parameters
+func LoadFontEx(fileName string, fontSize int32, fontChars *int32, charsCount int32) Font {
+	cfileName := C.CString(fileName)
+	defer C.free(unsafe.Pointer(cfileName))
+	cfontSize := (C.int)(fontSize)
+	cfontChars := (*C.int)(unsafe.Pointer(fontChars))
+	ccharsCount := (C.int)(charsCount)
+	ret := C.LoadFontEx(cfileName, cfontSize, cfontChars, ccharsCount)
+	v := newFontFromPointer(unsafe.Pointer(&ret))
+	return v
+}
+
+// LoadFontFromImage - Loads an Image font file (XNA style)
+func LoadFontFromImage(image Image, key Color, firstChar int32) Font {
+	cimage := image.cptr()
+	ckey := key.cptr()
+	cfirstChar := (C.int)(firstChar)
+	ret := C.LoadFontFromImage(*cimage, *ckey, cfirstChar)
+	v := newFontFromPointer(unsafe.Pointer(&ret))
+	return v
+}
+
+// LoadFontFromMemory - Load font from memory buffer, fileType refers to extension: i.e. ".ttf"
+func LoadFontFromMemory(fileType string, fileData []byte, dataSize int32, fontSize int32, fontChars *int32, charsCount int32) Font {
+	cfileType := C.CString(fileType)
+	defer C.free(unsafe.Pointer(cfileType))
+	cfileData := (*C.uchar)(unsafe.Pointer(&fileData[0]))
+	cdataSize := (C.int)(dataSize)
+	cfontSize := (C.int)(fontSize)
+	cfontChars := (*C.int)(unsafe.Pointer(fontChars))
+	ccharsCount := (C.int)(charsCount)
+	ret := C.LoadFontFromMemory(cfileType, cfileData, cdataSize, cfontSize, cfontChars, ccharsCount)
+	v := newFontFromPointer(unsafe.Pointer(&ret))
+	return v
+}
+
+// LoadFontData - Load font data for further use
+func LoadFontData(fileData []byte, dataSize int32, fontSize int32, fontChars *int32, charsCount, typ int32) *GlyphInfo {
+	cfileData := (*C.uchar)(unsafe.Pointer(&fileData[0]))
+	cdataSize := (C.int)(dataSize)
+	cfontSize := (C.int)(fontSize)
+	cfontChars := (*C.int)(unsafe.Pointer(fontChars))
+	ccharsCount := (C.int)(charsCount)
+	ctype := (C.int)(typ)
+	ret := C.LoadFontData(cfileData, cdataSize, cfontSize, cfontChars, ccharsCount, ctype)
+	v := newGlyphInfoFromPointer(unsafe.Pointer(&ret))
+	return &v
+}
+
+// UnloadFont - Unload Font from GPU memory (VRAM)
+func UnloadFont(font Font) {
+	cfont := font.cptr()
+	C.UnloadFont(*cfont)
+}
+
+// DrawText - Draw text (using default font)
+func DrawText(text string, posX int32, posY int32, fontSize int32, color Color) {
+	ctext := C.CString(text)
+	defer C.free(unsafe.Pointer(ctext))
+	cposX := (C.int)(posX)
+	cposY := (C.int)(posY)
+	cfontSize := (C.int)(fontSize)
+	ccolor := color.cptr()
+	C.DrawText(ctext, cposX, cposY, cfontSize, *ccolor)
+}
+
+// DrawTextEx - Draw text using Font and additional parameters
+func DrawTextEx(font Font, text string, position Vector2, fontSize float32, spacing float32, tint Color) {
+	cfont := font.cptr()
+	ctext := C.CString(text)
+	defer C.free(unsafe.Pointer(ctext))
+	cposition := position.cptr()
+	cfontSize := (C.float)(fontSize)
+	cspacing := (C.float)(spacing)
+	ctint := tint.cptr()
+	C.DrawTextEx(*cfont, ctext, *cposition, cfontSize, cspacing, *ctint)
+}
+
+// MeasureText - Measure string width for default font
+func MeasureText(text string, fontSize int32) int32 {
+	ctext := C.CString(text)
+	defer C.free(unsafe.Pointer(ctext))
+	cfontSize := (C.int)(fontSize)
+	ret := C.MeasureText(ctext, cfontSize)
+	v := (int32)(ret)
+	return v
+}
+
+// MeasureTextEx - Measure string size for Font
+func MeasureTextEx(font Font, text string, fontSize float32, spacing float32) Vector2 {
+	cfont := font.cptr()
+	ctext := C.CString(text)
+	defer C.free(unsafe.Pointer(ctext))
+	cfontSize := (C.float)(fontSize)
+	cspacing := (C.float)(spacing)
+	ret := C.MeasureTextEx(*cfont, ctext, cfontSize, cspacing)
+	v := newVector2FromPointer(unsafe.Pointer(&ret))
+	return v
+}
+
+// GetGlyphIndex - Returns index position for a unicode character on spritefont
+func GetGlyphIndex(font Font, character int32) int32 {
+	cfont := font.cptr()
+	ccharacter := (C.int)(character)
+	ret := C.GetGlyphIndex(*cfont, ccharacter)
+	v := (int32)(ret)
+	return v
+}
+
+// DrawFPS - Shows current FPS
+func DrawFPS(posX int32, posY int32) {
+	cposX := (C.int)(posX)
+	cposY := (C.int)(posY)
+	C.DrawFPS(cposX, cposY)
+}