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document drawer2D

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This commit is contained in:
UnknownShadow200 2018-12-13 10:54:54 +11:00
parent b297fc44e4
commit 55d402e7cf
2 changed files with 50 additions and 17 deletions
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21
src/Drawer2D.c
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@ -201,26 +201,26 @@ void Drawer2D_BmpIndexed(Bitmap* bmp, int x, int y, int size,
void Drawer2D_BmpScaled(Bitmap* dst, int x, int y, int width, int height,
Bitmap* src, int srcX, int srcY, int srcWidth, int srcHeight,
int scaleWidth, int scaleHeight, uint8_t scaleA, uint8_t scaleB) {
int scaleWidth, int scaleHeight, uint8_t tintA, uint8_t tintB) {
BitmapCol* dstRow, col;
BitmapCol* srcRow;
int xx, yy;
int scaledX, scaledY;
uint8_t scale;
uint8_t tint;
for (yy = 0; yy < height; yy++) {
scaledY = (y + yy) * srcHeight / scaleHeight;
srcRow = Bitmap_GetRow(src, srcY + (scaledY % srcHeight));
dstRow = Bitmap_GetRow(dst, y + yy) + x;
scale = (uint8_t)Math_Lerp(scaleA, scaleB, (float)yy / height);
tint = (uint8_t)Math_Lerp(tintA, tintB, (float)yy / height);
for (xx = 0; xx < width; xx++) {
scaledX = (x + xx) * srcWidth / scaleWidth;
col = srcRow[srcX + (scaledX % srcWidth)];
dstRow[xx].B = (col.B * scale) / 255;
dstRow[xx].G = (col.G * scale) / 255;
dstRow[xx].R = (col.R * scale) / 255;
dstRow[xx].B = (col.B * tint) / 255;
dstRow[xx].G = (col.G * tint) / 255;
dstRow[xx].R = (col.R * tint) / 255;
dstRow[xx].A = col.A;
}
}
@ -283,13 +283,12 @@ void Drawer2D_Clear(Bitmap* bmp, BitmapCol col, int x, int y, int width, int hei
void Drawer2D_MakeTextTexture(struct Texture* tex, struct DrawTextArgs* args, int X, int Y) {
static struct Texture empty = { GFX_NULL, Tex_Rect(0,0, 0,0), Tex_UV(0,0, 1,1) };
Size2D size = Drawer2D_MeasureText(args);
Size2D size;
Bitmap bmp;
if (!size.Width && !size.Height) {
*tex = empty; tex->X = X; tex->Y = Y;
return;
}
size = Drawer2D_MeasureText(args);
/* height is only 0 when width is 0 */
if (!size.Width) { *tex = empty; tex->X = X; tex->Y = Y; return; }
Bitmap_AllocateClearedPow2(&bmp, size.Width, size.Height);
{

46
src/Drawer2D.h
View File

@ -14,10 +14,11 @@ extern struct IGameComponent Drawer2D_Component;
void DrawTextArgs_Make(struct DrawTextArgs* args, STRING_REF const String* text, const FontDesc* font, bool useShadow);
void DrawTextArgs_MakeEmpty(struct DrawTextArgs* args, const FontDesc* font, bool useShadow);
/* Initialises the given font. When Drawer2D_BitmappedText is false, makes native font handle. */
CC_NOINLINE void Drawer2D_MakeFont(FontDesc* desc, int size, int style);
/* Whether chat text should be drawn and measuring using the currently bitmapped font,
false uses the font supplied as the DrawTextArgs argument supplied to the function. */
/* Whether text should be drawn and measured using the currently set font bitmap. */
/* If false, then text is instead draw using platform/system fonts. */
extern bool Drawer2D_BitmappedText;
/* Whether the shadows behind text (that uses shadows) is fully black. */
extern bool Drawer2D_BlackTextShadows;
@ -33,47 +34,80 @@ extern String Drawer2D_FontName;
/* Returns false if rectangle is completely outside bitmap's rectangle. */
bool Drawer2D_Clamp(Bitmap* bmp, int* x, int* y, int* width, int* height);
/* Fills the given area with a simple noisy pattern. */
/* Variation determines how 'visible/obvious' the noise is. */
void Gradient_Noise(Bitmap* bmp, BitmapCol col, int variation,
int x, int y, int width, int height);
/* Fills the given area with a vertical gradient, linerarly interpolating from a to b. */
/* First drawn row is filled with 'a', while last drawn is filled with 'b'. */
void Gradient_Vertical(Bitmap* bmp, BitmapCol a, BitmapCol b,
int x, int y, int width, int height);
/* Blends the given area with the given colour. */
/* Note that this only blends RGB, A is not blended. */
void Gradient_Blend(Bitmap* bmp, BitmapCol col, int blend,
int x, int y, int width, int height);
/* Fills the given area using pixels from an indexed bitmap. */
/* TODO: Currently this only handles square areas. */
void Drawer2D_BmpIndexed(Bitmap* bmp, int x, int y, int size,
uint8_t* indices, BitmapCol* palette);
/* Fills the given area using pixels from a region in the source bitmap, by repeatedly tiling the region. */
/* The pixels from the region are then scaled upwards or downwards depending on scale width and height. */
/* The pixels are then tinted, with the tint factor a linear interpolation from tintA to tintB. */
/* TODO: Bitmap tinting should be separate function. */
void Drawer2D_BmpScaled(Bitmap* dst, int x, int y, int width, int height,
Bitmap* src, int srcX, int srcY, int srcWidth, int srcHeight,
int scaleWidth, int scaleHeight, uint8_t scaleA, uint8_t scaleB);
int scaleWidth, int scaleHeight, uint8_t tintA, uint8_t tintB);
/* Fills the given area using pixels from a region in the source bitmap, by repeatedly tiling the region. */
/* For example, if area was 12x5 and region was 5x5, region gets drawn at (0,0), (5,0), (10,0) */
/* NOTE: The tiling origin is at (0, 0) not at (x, y) */
void Drawer2D_BmpTiled(Bitmap* dst, int x, int y, int width, int height,
Bitmap* src, int srcX, int srcY, int srcWidth, int srcHeight);
/* Fills the given area using pixels from the source bitmap. */
/* NOTE: You MUST ensure width and height are less than src's dimensions. */
void Drawer2D_BmpCopy(Bitmap* dst, int x, int y, int width, int height, Bitmap* src);
/* Draws a 2D flat rectangle. */
/* Fills the given area with the given colour, then draws blended borders around it. */
void Drawer2D_Rect(Bitmap* bmp, BitmapCol col, int x, int y, int width, int height);
/* Fills the given rectangular area with the given colour. */
/* Fills the area with the given colour. */
void Drawer2D_Clear(Bitmap* bmp, BitmapCol col, int x, int y, int width, int height);
void Drawer2D_Underline(Bitmap* bmp, int x, int y, int width, int height, BitmapCol col);
/* Draws text using the given font at the given coordinates. */
void Drawer2D_DrawText(Bitmap* bmp, struct DrawTextArgs* args, int x, int y);
/* Returns how wide the given text would be when drawn. */
int Drawer2D_TextWidth(struct DrawTextArgs* args);
/* Returns size the given text would be when drawn. */
/* NOTE: Height returned only depends on the font. (see Drawer2D_FontHeight).*/
Size2D Drawer2D_MeasureText(struct DrawTextArgs* args);
/* Similar to Drawer2D_DrawText, but trims the text with trailing ".." if wider than maxWidth. */
void Drawer2D_DrawClippedText(Bitmap* bmp, struct DrawTextArgs* args, int x, int y, int maxWidth);
/* Returns the line height for drawing any character in the font. */
int Drawer2D_FontHeight(const FontDesc* font, bool useShadow);
/* Creates a texture consisting only of the given text drawn onto it. */
/* NOTE: The returned texture is always padded up to nearest power of two dimensions. */
void Drawer2D_MakeTextTexture(struct Texture* tex, struct DrawTextArgs* args, int X, int Y);
/* Creates a texture consisting of the pixels from the given bitmap. */
/* NOTE: bmp must always have power of two dimensions. */
/* used specifies what region of the texture actually should be drawn. */
void Drawer2D_Make2DTexture(struct Texture* tex, Bitmap* bmp, Size2D used, int X, int Y);
/* Returns whether the given colour code is used/valid. */
bool Drawer2D_ValidColCodeAt(const String* text, int i);
/* Returns whether the given colour code is used/valid. */
/* NOTE: This can change if the server defines custom colour codes. */
bool Drawer2D_ValidColCode(char c);
/* Whether text is empty or consists purely of valid colour codes. */
bool Drawer2D_IsEmptyText(const String* text);
/* Returns the last valid colour code in the given input, or \0 if not found. */
char Drawer2D_LastCol(const String* text, int start);
/* Returns whether the colour code is f, F or \0. */
bool Drawer2D_IsWhiteCol(char c);
void Drawer2D_ReducePadding_Tex(struct Texture* tex, int point, int scale);
void Drawer2D_ReducePadding_Height(int* height, int point, int scale);
/* Sets the bitmap used for drawing bitmapped fonts. (i.e. default.png) */
/* The bitmap must be square and consist of a 16x16 tile layout. */
void Drawer2D_SetFontBitmap(Bitmap* bmp);
#endif