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id
355
plugins/libwmfun/drawstring.c
Normal file
355
plugins/libwmfun/drawstring.c
Normal file
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#include <proplist.h>
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#include <WINGs.h>
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#include <WINGsP.h>
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#include <freetype/freetype.h>
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#include "generic.h"
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#define MAX_GLYPHS 256
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#define _debug(f...) {fprintf(stderr, "debug: ");fprintf(stderr, ##f);fflush(stderr);}
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#define _showerr(f...) {fprintf(stderr, ##f);fflush(stderr);}
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/* #define _debug(s) printf(s);*/
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/* drawPlainString */
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static Display *ds_dpy = 0;
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static Colormap ds_cmap;
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static RContext *rc = 0;
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FT_Library ft_library;
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static int inst_ft_library = 0;
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RColor black_color = {0, 0, 0, 0};
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typedef struct __FreeTypeRImage{
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RImage *image;
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int advance_x;
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int advance_y;
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int left;
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int top;
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} WMFreeTypeRImage;
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typedef struct __FreeTypeData{
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FT_Face face;
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RColor color;
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WMFreeTypeRImage **glyphs_array;
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/* will use this when we have frame window plugin */
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/* char *last_titlestr; */
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} WMFreeTypeData;
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int getColor (const char *string, Colormap cmap, XColor *xcolor) {
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if (!XParseColor (ds_dpy, cmap, string, xcolor)) {
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return 0;
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}
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if (!XAllocColor (ds_dpy, cmap, xcolor)) {
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return 0;
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}
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return 1;
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}
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void
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initDrawPlainString(Display *dpy, Colormap cmap) {
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ds_dpy = dpy;
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ds_cmap = cmap;
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}
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void
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drawPlainString (proplist_t pl, Drawable d,
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int x, int y, unsigned width, unsigned height,
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char *text, void **func_data)
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{
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XColor color1, color2, color3, color4;
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char *plcolor;
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int i, length;
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static int g;
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Pixmap drawbuffer;
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GC gc;
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WMFont *font;
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length = strlen(text);
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gc = func_data[0];
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font = func_data[1];
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/*
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printf("%d members\n",PLGetNumberOfElements(pl));
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for (i =0;i<7;i++) {
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printf("%d %s\n",i,PLGetString(PLGetArrayElement(pl,i)));
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}
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return;
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*/
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drawbuffer = XCreatePixmap(ds_dpy, d,
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width, height*4+6, DefaultDepth(ds_dpy,DefaultScreen(ds_dpy)));
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XCopyArea(ds_dpy, d, drawbuffer,gc,0,y-1,width,height,0,0);
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if (PLGetNumberOfElements(pl) > 5) {
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plcolor = PLGetArrayElement(pl, 5);
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if (getColor(PLGetString(plcolor),ds_cmap, &color3)) {
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XSetForeground(ds_dpy, gc, color3.pixel);
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if (font->notFontSet) {
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XSetFont(ds_dpy, gc, font->font.normal->fid);
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XDrawString(ds_dpy, drawbuffer, gc, x+3, font->y+3, text, length);
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} else {
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XmbDrawString(ds_dpy, drawbuffer, font->font.set, gc, x+4, y+4 + font->y,
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text, length);
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}
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}
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}
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if (PLGetNumberOfElements(pl) > 4) {
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plcolor = PLGetArrayElement(pl, 4);
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if (getColor(PLGetString(plcolor),ds_cmap, &color1)) {
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XSetForeground(ds_dpy, gc, color1.pixel);
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if (font->notFontSet) {
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XSetFont(ds_dpy, gc, font->font.normal->fid);
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XDrawString(ds_dpy, drawbuffer, gc, x+1, font->y+1, text, length);
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} else {
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XmbDrawString(ds_dpy, drawbuffer, font->font.set, gc, x, y + font->y,
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text, length);
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}
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}
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}
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if (PLGetNumberOfElements(pl) > 3) {
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plcolor = PLGetArrayElement(pl, 3);
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if (getColor(PLGetString(plcolor),ds_cmap, &color2)) {
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XSetForeground(ds_dpy, gc, color2.pixel);
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if (font->notFontSet) {
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XSetFont(ds_dpy, gc, font->font.normal->fid);
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XDrawString(ds_dpy, drawbuffer, gc, x,font->y, text, length);
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} else {
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XmbDrawString(ds_dpy, drawbuffer, font->font.set, gc, x-1, y-1 + font->y,
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text, length);
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}
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}
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}
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/*
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plcolor = PLGetArrayElement(pl, 6);
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parse_xcolor(PLGetString(plcolor), &color4);
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*/
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XCopyArea(ds_dpy, drawbuffer, d,gc,0,0,width,height,0,y-1);
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XFreePixmap(ds_dpy, drawbuffer);
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}
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WMFreeTypeRImage *renderChar(FT_Face face, FT_ULong char_index, RColor *color) {
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FT_GlyphSlot slot;
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FT_Bitmap* bitmap;
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WMFreeTypeRImage *tmp_data;
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int index, x, y, i, error; /* error? no no no */
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tmp_data = malloc(sizeof(WMFreeTypeRImage));
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index = FT_Get_Char_Index(face, char_index);
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FT_Load_Glyph(face, index, FT_LOAD_DEFAULT);
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FT_Render_Glyph(face->glyph, ft_render_mode_normal);
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slot = face->glyph;
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bitmap = &slot->bitmap;
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tmp_data->advance_x = slot->advance.x;
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tmp_data->advance_y = slot->advance.y;
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tmp_data->top = slot->bitmap_top;
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tmp_data->left = slot->bitmap_left;
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if (bitmap->width > 0 && bitmap->rows > 0) {
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tmp_data->image = RCreateImage(bitmap->width, bitmap->rows, True);
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}
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else tmp_data->image = NULL;
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for (y=0; y < bitmap->rows; y++) {
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for (x=0; x < bitmap->width; x++) {
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color->alpha = bitmap->buffer[y * bitmap->width + x];
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ROperatePixel(tmp_data->image,
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RCopyOperation, x, y, color);
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}
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}
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return tmp_data;
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}
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/* drawFreetypeString */
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void initDrawFreeTypeString(proplist_t pl, void **init_data) {
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WMFreeTypeData *data;
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XColor xcolor;
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_debug("invoke initDrawFreeTypeString with init_data[2] %s\n", init_data[2]);
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_debug("%x is ds_dpy\n", ds_dpy);
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initDrawPlainString((Display *)init_data[0], (Colormap)init_data[1]);
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_debug("then %x is ds_dpy\n", ds_dpy);
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/* set init_data[2] to array of RImage */
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/*
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* this would better to have sharable font system but
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* I want to see this more in WINGs though -- ]d
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*/
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init_data[2] = malloc(sizeof(WMFreeTypeData));
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data = init_data[2];
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getColor(PLGetString(PLGetArrayElement(pl, 3)), ds_cmap, &xcolor);
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data->color.red = xcolor.red >> 8;
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data->color.green = xcolor.green >> 8;
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data->color.blue = xcolor.blue >> 8;
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data->glyphs_array = malloc(sizeof(WMFreeTypeRImage*) * MAX_GLYPHS);
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memset(data->glyphs_array, 0, sizeof(WMFreeTypeRImage*) * MAX_GLYPHS);
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if (!rc) {
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RContextAttributes rcattr;
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rcattr.flags = RC_RenderMode | RC_ColorsPerChannel;
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rcattr.render_mode = RDitheredRendering;
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rcattr.colors_per_channel = 4;
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rc = RCreateContext(ds_dpy, DefaultScreen(ds_dpy), &rcattr);
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}
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/* case 1 -- no no case 2 yet :P */
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if (!inst_ft_library) {
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FT_Init_FreeType(ft_library);
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inst_ft_library++;
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}
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_debug("initialize freetype library\n");
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FT_New_Face(ft_library, PLGetString(PLGetArrayElement(pl, 4)), 0, &data->face);
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FT_Set_Pixel_Sizes(data->face, 0, atoi(PLGetString(PLGetArrayElement(pl, 5))));
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}
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void
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destroyDrawFreeTypeString(proplist_t pl, void **func_data) {
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int i; /* error? no no no */
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WMFreeTypeData *data;
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data = (WMFreeTypeData *) ((void **)*func_data)[2];
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for (i = 0; i < MAX_GLYPHS; i++) {
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if (data->glyphs_array[i]) {
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if (data->glyphs_array[i]->image)
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RDestroyImage(data->glyphs_array[i]->image);
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free(data->glyphs_array[i]);
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}
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}
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free(data->glyphs_array);
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free(data);
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FT_Done_Face(data->face);
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inst_ft_library--;
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if (!inst_ft_library) FT_Done_FreeType(ft_library);
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}
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void
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drawFreeTypeString (proplist_t pl, Drawable d,
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int x, int y, unsigned width, unsigned height,
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unsigned char *text, void **func_data) {
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WMFreeTypeData *data;
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RImage *rimg;
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int i, j;
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int length = strlen(text);
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Pixmap pixmap;
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GC gc;
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int xwidth, xheight, dummy;
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Window wdummy;
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/*pixmap = XCreatePixmap(ds_dpy, d, width, height, DefaultDepth(ds_dpy, DefaultScreen(ds_dpy)));*/
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gc = func_data[0];
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data = ((void **)func_data[2])[2];
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XClearWindow(ds_dpy, d);
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/* create temp for drawing */
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XGetGeometry(ds_dpy, d, &wdummy, &dummy, &dummy, &xwidth, &xheight, &dummy, &dummy);
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pixmap = XCreatePixmap(ds_dpy, d, xwidth, xheight, DefaultDepth(ds_dpy, DefaultScreen(ds_dpy)));
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XCopyArea(ds_dpy, d, pixmap, gc, 0, 0, xwidth, xheight, 0, 0);
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rimg = RCreateImageFromDrawable(rc, pixmap, None);
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XFreePixmap(ds_dpy, pixmap);
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if (rimg) {
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for (i = 0, j = 3; i < strlen(text); i++) {
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if (!data->glyphs_array[text[i]]) {
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data->glyphs_array[text[i]] = renderChar(data->face, (FT_ULong)text[i], &data->color);
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_debug("alloc %c\n", text[i]);
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}
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if (data->glyphs_array[text[i]]->image) {
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int _sx, _dx, _sy, _dy, _sw, _sh;
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_sx = 0;
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_dx = j + data->glyphs_array[text[i]]->left;
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_sw = data->glyphs_array[text[i]]->image->width;
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_sy = 0;
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_dy = rimg->height - data->glyphs_array[text[i]]->top ;
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_sh = data->glyphs_array[text[i]]->image->height;
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if (_dx >= rimg->width) {
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j += data->glyphs_array[text[i]]->advance_x >> 6;
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continue;
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} else if (_dx + data->glyphs_array[text[i]]->image->width > rimg->width) {
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_sw = rimg->width - _dx;
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}
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if (_dx + data->glyphs_array[text[i]]->image->width < 0) {
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j += data->glyphs_array[text[i]]->advance_x >> 6;
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continue;
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} else if (_dx < 0) {
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_sx = -_dx;
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_sw = data->glyphs_array[text[i]]->image->width + _dx;
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_dx = 0;
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}
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if (_dy >= rimg->height) {
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j += data->glyphs_array[text[i]]->advance_x >> 6;
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continue;
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} else if (_dy + data->glyphs_array[text[i]]->image->height > rimg->height) {
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_sh = rimg->height - _dy;
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}
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if (_dy + data->glyphs_array[text[i]]->image->height < 0) {
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j += data->glyphs_array[text[i]]->advance_x >> 6;
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continue;
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} else if (_dy < 0) {
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_sy = -_dy;
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_sh = data->glyphs_array[text[i]]->image->height + _dy;
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_dy = 0;
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}
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if (_sh > 0 && _sw > 0)
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RCombineArea(rimg, data->glyphs_array[text[i]]->image, _sx, _sy,
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_sw, _sh, _dx, _dy);
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j += data->glyphs_array[text[i]]->advance_x >> 6;
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}
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}
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RConvertImage(rc, rimg, &pixmap);
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XCopyArea(ds_dpy, pixmap, d, gc, 0, 0, rimg->width, rimg->height, 0, 0);
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XFreePixmap(ds_dpy, pixmap);
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RDestroyImage(rimg);
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}
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}
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/* flicker!, using buffer should fix.
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* parsing color is slow, pl is faster,
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* should cache color -- ]d */
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/* core */
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void
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destroyDrawString (proplist_t pl, void **init_data) {
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if (strcmp(PLGetString(PLGetArrayElement(pl, 2)), "drawPlainString") == 0)
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destroyDrawPlainString((Display *)init_data[0], (Colormap)init_data[1]);
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else if (strcmp(PLGetString(PLGetArrayElement(pl, 2)), "drawFreeTypeString") == 0)
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destroyDrawFreeTypeString(pl, init_data);
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}
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void
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initDrawString (proplist_t pl, void **init_data) {
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_debug("invoke initDrawString: %s\n", PLGetString(PLGetArrayElement(pl, 2)));
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if (strcmp(PLGetString(PLGetArrayElement(pl, 2)), "drawPlainString") == 0)
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initDrawPlainString((Display *)init_data[0], (Colormap)init_data[1]);
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else if (strcmp(PLGetString(PLGetArrayElement(pl, 2)), "drawFreeTypeString") == 0)
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initDrawFreeTypeString(pl, init_data);
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_debug("finish initDrawString\n");
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}
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