/* * draw.c - draw functions * * Copyright © 2007 Julien Danjou * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * */ #include #include #include #include #include "layout.h" #include "util.h" #include "draw.h" extern AwesomeConf globalconf; DrawCtx * draw_get_context(Drawable drawable, int phys_screen, int width, int height) { DrawCtx *d = p_new(DrawCtx, 1); d->phys_screen = phys_screen; d->width = width; d->height = height; d->depth = DefaultDepth(globalconf.display, phys_screen); d->visual = DefaultVisual(globalconf.display, phys_screen); d->drawable = drawable; return d; }; void draw_text(DrawCtx *ctx, int x, int y, int w, int h, XftFont *font, const char *text, XColor fg, XColor bg) { int nw = 0; static char buf[256]; size_t len, olen; cairo_font_face_t *font_face; cairo_surface_t *surface; cairo_t *cr; draw_rectangle(ctx, x, y, w, h, True, bg); if(!a_strlen(text)) return; surface = cairo_xlib_surface_create(globalconf.display, ctx->drawable, ctx->visual, ctx->width, ctx->height); cr = cairo_create(surface); font_face = cairo_ft_font_face_create_for_pattern(font->pattern); cairo_set_font_face(cr, font_face); cairo_set_font_size(cr, font->height); cairo_set_source_rgb(cr, fg.red / 65535.0, fg.green / 65535.0, fg.blue / 65535.0); olen = len = a_strlen(text); if(len >= sizeof(buf)) len = sizeof(buf) - 1; memcpy(buf, text, len); buf[len] = 0; while(len && (nw = textwidth(font, buf)) > w) buf[--len] = 0; if(nw > w) return; /* too long */ if(len < olen) { if(len > 1) buf[len - 1] = '.'; if(len > 2) buf[len - 2] = '.'; if(len > 3) buf[len - 3] = '.'; } cairo_move_to(cr, x + font->height / 2, y + font->ascent + (ctx->height - font->height) / 2); cairo_show_text(cr, buf); cairo_font_face_destroy(font_face); cairo_destroy(cr); cairo_surface_destroy(surface); } void draw_rectangle(DrawCtx *ctx, int x, int y, int w, int h, Bool filled, XColor color) { cairo_surface_t *surface; cairo_t *cr; surface = cairo_xlib_surface_create(globalconf.display, ctx->drawable, ctx->visual, ctx->width, ctx->height); cr = cairo_create (surface); cairo_set_antialias(cr, CAIRO_ANTIALIAS_NONE); cairo_set_line_width(cr, 1.0); cairo_set_source_rgb(cr, color.red / 65535.0, color.green / 65535.0, color.blue / 65535.0); if(filled) { cairo_rectangle(cr, x, y, w + 1, h + 1); cairo_fill(cr); } else cairo_rectangle(cr, x + 1, y, w, h); cairo_stroke(cr); cairo_destroy(cr); cairo_surface_destroy(surface); } void draw_circle(DrawCtx *ctx, int x, int y, int r, Bool filled, XColor color) { cairo_surface_t *surface; cairo_t *cr; surface = cairo_xlib_surface_create(globalconf.display, ctx->drawable, ctx->visual, ctx->width, ctx->height); cr = cairo_create (surface); cairo_set_line_width(cr, 1.0); cairo_set_source_rgb(cr, color.red / 65535.0, color.green / 65535.0, color.blue / 65535.0); if(filled) { cairo_arc (cr, x + r, y + r, r, 0, 2 * M_PI); cairo_fill(cr); } else cairo_arc (cr, x + r, y + r, r - 1, 0, 2 * M_PI); cairo_stroke(cr); cairo_destroy(cr); cairo_surface_destroy(surface); } void draw_image_from_argb_data(DrawCtx *ctx, int x, int y, int w, int h, int wanted_h, unsigned char *data) { double ratio; cairo_surface_t *surface, *source; cairo_t *cr; surface = cairo_xlib_surface_create(globalconf.display, ctx->drawable, ctx->visual, ctx->width, ctx->height); source = cairo_image_surface_create_for_data(data, CAIRO_FORMAT_ARGB32, w, h, 0); cr = cairo_create (surface); if(wanted_h > 0 && h > 0) { ratio = (double) wanted_h / (double) h; cairo_scale(cr, ratio, ratio); cairo_set_source_surface(cr, source, x / ratio, y / ratio); } else cairo_set_source_surface(cr, source, x, y); cairo_paint(cr); cairo_destroy(cr); cairo_surface_destroy(source); cairo_surface_destroy(surface); } void draw_image(DrawCtx *ctx, int x, int y, int wanted_h, const char *filename) { double ratio; int h; cairo_surface_t *surface, *source; cairo_t *cr; source = cairo_xlib_surface_create(globalconf.display, ctx->drawable, ctx->visual, ctx->width, ctx->height); surface = cairo_image_surface_create_from_png(filename); cr = cairo_create (source); if(wanted_h > 0 && (h = cairo_image_surface_get_height(surface)) > 0) { ratio = (double) wanted_h / (double) h; cairo_scale(cr, ratio, ratio); cairo_set_source_surface(cr, surface, x / ratio, y / ratio); } else cairo_set_source_surface(cr, surface, x, y); cairo_paint(cr); cairo_destroy(cr); cairo_surface_destroy(source); cairo_surface_destroy(surface); } Area draw_get_image_size(const char *filename) { Area size; cairo_surface_t *surface; surface = cairo_image_surface_create_from_png(filename); cairo_image_surface_get_width(surface); size.width = cairo_image_surface_get_width(surface); size.height = cairo_image_surface_get_height(surface); cairo_surface_destroy(surface); return size; } Drawable draw_rotate(DrawCtx *ctx, int screen, double angle, int tx, int ty) { cairo_surface_t *surface, *source; cairo_t *cr; Drawable newdrawable; newdrawable = XCreatePixmap(globalconf.display, RootWindow(globalconf.display, screen), ctx->height, ctx->width, ctx->depth); surface = cairo_xlib_surface_create(globalconf.display, newdrawable, ctx->visual, ctx->height, ctx->width); source = cairo_xlib_surface_create(globalconf.display, ctx->drawable, ctx->visual, ctx->width, ctx->height); cr = cairo_create (surface); cairo_translate(cr, tx, ty); cairo_rotate(cr, angle); cairo_set_source_surface(cr, source, 0.0, 0.0); cairo_paint(cr); cairo_destroy(cr); cairo_surface_destroy(source); cairo_surface_destroy(surface); return newdrawable; } static unsigned short textwidth_primitive(XftFont *font, char *text) { cairo_surface_t *surface; cairo_t *cr; cairo_font_face_t *font_face; cairo_text_extents_t te; surface = cairo_xlib_surface_create(globalconf.display, DefaultScreen(globalconf.display), DefaultVisual(globalconf.display, DefaultScreen(globalconf.display)), DisplayWidth(globalconf.display, DefaultScreen(globalconf.display)), DisplayHeight(globalconf.display, DefaultScreen(globalconf.display))); cr = cairo_create(surface); font_face = cairo_ft_font_face_create_for_pattern(font->pattern); cairo_set_font_face(cr, font_face); cairo_set_font_size(cr, font->height); cairo_text_extents(cr, text, &te); cairo_destroy(cr); cairo_surface_destroy(surface); cairo_font_face_destroy(font_face); return MAX(te.x_advance, te.width) + font->height; } unsigned short textwidth(XftFont *font, char *text) { if (!a_strlen(text)) return 0; return textwidth_primitive(font, text); } // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80