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use Xft to draw strings

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This commit is contained in:
Cedric Roux
2016-05-25 10:30:25 +02:00
parent 120951d732
commit 187e7906cb
9 changed files with 77 additions and 38 deletions
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common/utils/T/tracer/Makefile.remote
+1 -1
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@@ -3,7 +3,7 @@ CFLAGS=-Wall -g -pthread -DT_TRACER -I.
#CFLAGS += -O3 -ffast-math -fomit-frame-pointer
LIBS=-lX11 -lm -lpng
LIBS=-lX11 -lm -lpng -lXft
tracer_remote: remote_old.o plot.o database.o gui.o utils.o gui/gui.a
$(CC) $(CFLAGS) -o tracer_remote $^ $(LIBS)
common/utils/T/tracer/gui/Makefile
+1 -1
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@@ -1,5 +1,5 @@
CC=gcc
CFLAGS=-Wall -g -pthread
CFLAGS=-Wall -g -pthread -I/usr/include/X11/Xft -I/usr/include/freetype2
OBJS=init.o loop.o toplevel_window.o x.o container.o widget.o \
gui.o label.o event.o xy_plot.o textlist.o notify.o positioner.o \
common/utils/T/tracer/gui/gui.h
+2
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@@ -12,6 +12,8 @@ typedef void widget;
#define BACKGROUND_COLOR 0
#define FOREGROUND_COLOR 1
#define DEFAULT_FONT 0
/* key modifiers */
#define KEY_SHIFT (1<<0)
#define KEY_CONTROL (1<<1)
common/utils/T/tracer/gui/label.c
+3 -2
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@@ -10,7 +10,7 @@ static void paint(gui *_gui, widget *_w)
struct gui *g = _gui;
struct label_widget *l = _w;
LOGD("PAINT label '%s'\n", l->t);
x_draw_string(g->x, g->xwin, l->color,
x_draw_string(g->x, g->xwin, DEFAULT_FONT, l->color,
l->common.x, l->common.y + l->baseline, l->t);
}
@@ -35,7 +35,8 @@ widget *new_label(gui *_gui, const char *label)
if (w->t == NULL) OOM;
w->color = FOREGROUND_COLOR;
x_text_get_dimensions(g->x, label, &w->width, &w->height, &w->baseline);
x_text_get_dimensions(g->x, DEFAULT_FONT, label,
&w->width, &w->height, &w->baseline);
w->common.paint = paint;
w->common.hints = hints;
common/utils/T/tracer/gui/textlist.c
+3 -2
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@@ -16,7 +16,7 @@ static void paint(gui *_gui, widget *_this)
this->common.width, this->common.height);
for (i = 0, j = this->starting_line;
i < this->allocated_nlines && j < this->text_count; i++, j++)
x_draw_clipped_string(g->x, g->xwin, this->color[j],
x_draw_clipped_string(g->x, g->xwin, DEFAULT_FONT, this->color[j],
this->common.x,
this->common.y + i * this->line_height + this->baseline,
this->text[j],
@@ -79,7 +79,8 @@ widget *new_textlist(gui *_gui, int width, int nlines, int bgcol)
w = new_widget(g, TEXT_LIST, sizeof(struct textlist_widget));
w->wanted_nlines = nlines;
x_text_get_dimensions(g->x, ".", &dummy, &w->line_height, &w->baseline);
x_text_get_dimensions(g->x, DEFAULT_FONT, ".",
&dummy, &w->line_height, &w->baseline);
w->background_color = bgcol;
w->wanted_width = width;
common/utils/T/tracer/gui/x.c
+50 -21
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@@ -33,12 +33,34 @@ int x_new_color(x_connection *_x, char *color)
{
struct x_connection *x = _x;
x->ncolors++;
x->colors = realloc(x->colors, x->ncolors * sizeof(GC));
if (x->colors == NULL) OOM;
x->colors[x->ncolors-1] = create_gc(x->d, color);
x->xft_colors = realloc(x->xft_colors, x->ncolors * sizeof(XftColor));
if (x->xft_colors == NULL) OOM;
if (XftColorAllocName(x->d, DefaultVisual(x->d, DefaultScreen(x->d)),
DefaultColormap(x->d, DefaultScreen(x->d)),
color, &x->xft_colors[x->ncolors-1]) == False)
ERR("could not allocate color '%s'\n", color);
return x->ncolors - 1;
}
int x_new_font(x_connection *_x, char *font)
{
struct x_connection *x = _x;
/* TODO: allocate fonts only once */
x->nfonts++;
x->fonts = realloc(x->fonts, x->nfonts * sizeof(XftFont *));
if (x->fonts == NULL) OOM;
x->fonts[x->nfonts-1] = XftFontOpenName(x->d, DefaultScreen(x->d), font);
if (x->fonts[x->nfonts-1] == NULL)
ERR("failed allocating font '%s'\n", font);
return x->nfonts - 1;
}
x_connection *x_open(void)
{
struct x_connection *ret;
@@ -53,6 +75,8 @@ x_connection *x_open(void)
x_new_color(ret, "white"); /* background color */
x_new_color(ret, "black"); /* foreground color */
x_new_font(ret, "sans-8");
return ret;
}
@@ -78,6 +102,11 @@ x_window *x_create_window(x_connection *_x, int width, int height,
XFillRectangle(x->d, ret->p, x->colors[BACKGROUND_COLOR],
0, 0, width, height);
ret->xft = XftDrawCreate(x->d, ret->p,
DefaultVisual(x->d, DefaultScreen(x->d)),
DefaultColormap(x->d, DefaultScreen(x->d)));
if (ret->xft == NULL) ERR("XftDrawCreate failed\n");
/* enable backing store */
{
XSetWindowAttributes att;
@@ -261,11 +290,17 @@ void x_events(gui *_gui)
w->common.allocate(g, w, 0, 0, xw->new_width, xw->new_height);
xw->width = xw->new_width;
xw->height = xw->new_height;
XftDrawDestroy(xw->xft);
XFreePixmap(x->d, xw->p);
xw->p = XCreatePixmap(x->d, xw->w, xw->width, xw->height,
DefaultDepth(x->d, DefaultScreen(x->d)));
XFillRectangle(x->d, xw->p, x->colors[BACKGROUND_COLOR],
0, 0, xw->width, xw->height);
xw->xft = XftDrawCreate(x->d, xw->p,
DefaultVisual(x->d, DefaultScreen(x->d)),
DefaultColormap(x->d, DefaultScreen(x->d)));
if (xw->xft == NULL) ERR("XftDrawCreate failed\n");
//xw->repaint = 1;
}
}
@@ -290,24 +325,17 @@ void x_flush(x_connection *_x)
XFlush(x->d);
}
void x_text_get_dimensions(x_connection *_c, const char *t,
void x_text_get_dimensions(x_connection *_c, int font, const char *t,
int *width, int *height, int *baseline)
{
struct x_connection *c = _c;
int dir;
int ascent;
int descent;
XCharStruct overall;
XGlyphInfo ext;
/* TODO: don't use XQueryTextExtents (X roundtrip) */
XQueryTextExtents(c->d, XGContextFromGC(c->colors[1]), t, strlen(t),
&dir, &ascent, &descent, &overall);
XftTextExtents8(c->d, c->fonts[font], (FcChar8 *)t, strlen(t), &ext);
//LOGD("dir %d ascent %d descent %d lbearing %d rbearing %d width %d ascent %d descent %d\n", dir, ascent, descent, overall.lbearing, overall.rbearing, overall.width, overall.ascent, overall.descent);
*width = overall.width;
*height = ascent + descent;
*baseline = ascent;
*width = ext.width;
*height = c->fonts[font]->height;
*baseline = c->fonts[font]->ascent;
}
/***********************************************************************/
@@ -338,25 +366,26 @@ void x_fill_rectangle(x_connection *_c, x_window *_w, int color,
XFillRectangle(c->d, w->p, c->colors[color], x, y, width, height);
}
void x_draw_string(x_connection *_c, x_window *_w, int color,
void x_draw_string(x_connection *_c, x_window *_w, int font, int color,
int x, int y, const char *t)
{
struct x_connection *c = _c;
struct x_window *w = _w;
int tlen = strlen(t);
XDrawString(c->d, w->p, c->colors[color], x, y, t, tlen);
XftDrawString8(w->xft, &c->xft_colors[color], c->fonts[font],
x, y, (const unsigned char *)t, tlen);
}
void x_draw_clipped_string(x_connection *_c, x_window *_w, int color,
int x, int y, const char *t,
void x_draw_clipped_string(x_connection *_c, x_window *_w, int font,
int color, int x, int y, const char *t,
int clipx, int clipy, int clipwidth, int clipheight)
{
struct x_connection *c = _c;
struct x_window *w = _w;
XRectangle clip = { clipx, clipy, clipwidth, clipheight };
XSetClipRectangles(c->d, c->colors[color], 0, 0, &clip, 1, Unsorted);
x_draw_string(_c, _w, color, x, y, t);
XSetClipMask(c->d, c->colors[color], None);
if (XftDrawSetClipRectangles(w->xft, 0, 0, &clip, 1) == False) abort();
x_draw_string(_c, _w, font, color, x, y, t);
if (XftDrawSetClip(w->xft, NULL) == False) abort();
}
void x_draw_image(x_connection *_c, x_window *_w, x_image *_img, int x, int y)
common/utils/T/tracer/gui/x.h
+5 -4
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@@ -20,12 +20,13 @@ int x_connection_fd(x_connection *x);
void x_flush(x_connection *x);
int x_new_color(x_connection *x, char *color);
int x_new_font(x_connection *x, char *font);
/* for x_events, we pass the gui */
#include "gui.h"
void x_events(gui *gui);
void x_text_get_dimensions(x_connection *, const char *t,
void x_text_get_dimensions(x_connection *, int font, const char *t,
int *width, int *height, int *baseline);
/* drawing functions */
@@ -39,11 +40,11 @@ void x_draw_rectangle(x_connection *c, x_window *w, int color,
void x_fill_rectangle(x_connection *c, x_window *w, int color,
int x, int y, int width, int height);
void x_draw_string(x_connection *_c, x_window *_w, int color,
void x_draw_string(x_connection *_c, x_window *_w, int font, int color,
int x, int y, const char *t);
void x_draw_clipped_string(x_connection *_c, x_window *_w, int color,
int x, int y, const char *t,
void x_draw_clipped_string(x_connection *_c, x_window *_w, int font,
int color, int x, int y, const char *t,
int clipx, int clipy, int clipwidth, int clipheight);
void x_draw_image(x_connection *c, x_window *w, x_image *img, int x, int y);
common/utils/T/tracer/gui/x_defs.h
+5
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@@ -2,14 +2,18 @@
#define _X_DEFS_H_
#include <X11/Xlib.h>
#include <Xft.h>
struct x_connection {
Display *d;
GC *colors;
XftColor *xft_colors;
int ncolors;
XPoint *pts;
int pts_size;
int pts_maxsize;
XftFont **fonts;
int nfonts;
};
struct x_window {
@@ -17,6 +21,7 @@ struct x_window {
Pixmap p;
int width;
int height;
XftDraw *xft;
/* below: internal data used for X events handling */
int redraw;
int repaint;
common/utils/T/tracer/gui/xy_plot.c
+7 -7
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@@ -79,8 +79,8 @@ static void paint(gui *_gui, widget *_this)
this->common.x + this->vrule_width + x,
this->common.y + this->common.height - this->label_height * 2 - 5);
sprintf(v, "%g", k * ticstep);
x_text_get_dimensions(g->x, v, &vwidth, &dummy, &dummy);
x_draw_string(g->x, g->xwin, FOREGROUND_COLOR,
x_text_get_dimensions(g->x, DEFAULT_FONT, v, &vwidth, &dummy, &dummy);
x_draw_string(g->x, g->xwin, DEFAULT_FONT, FOREGROUND_COLOR,
this->common.x + this->vrule_width + x - vwidth/2,
this->common.y + this->common.height - this->label_height * 2 +
this->label_baseline,
@@ -116,20 +116,20 @@ static void paint(gui *_gui, widget *_this)
(allocated_ymax - allocated_ymin) *
(allocated_plot_height - 1);
sprintf(v, "%g", k * ticstep);
x_text_get_dimensions(g->x, v, &vwidth, &dummy, &dummy);
x_text_get_dimensions(g->x, DEFAULT_FONT, v, &vwidth, &dummy, &dummy);
x_draw_line(g->x, g->xwin, FOREGROUND_COLOR,
this->common.x + this->vrule_width,
this->common.y + FLIP(y),
this->common.x + this->vrule_width + 5,
this->common.y + FLIP(y));
x_draw_string(g->x, g->xwin, FOREGROUND_COLOR,
x_draw_string(g->x, g->xwin, DEFAULT_FONT, FOREGROUND_COLOR,
this->common.x + this->vrule_width - vwidth - 2,
this->common.y + FLIP(y) - this->label_height/2+this->label_baseline,
v);
}
/* label at bottom, in the middle */
x_draw_string(g->x, g->xwin, FOREGROUND_COLOR,
x_draw_string(g->x, g->xwin, DEFAULT_FONT, FOREGROUND_COLOR,
this->common.x + (this->common.width - this->label_width) / 2,
this->common.y + this->common.height - this->label_height
+ this->label_baseline,
@@ -177,8 +177,8 @@ widget *new_xy_plot(gui *_gui, int width, int height, char *label,
w->label = strdup(label); if (w->label == NULL) OOM;
/* TODO: be sure calling X there is valid wrt "global model" (we are
* not in the "gui thread") */
x_text_get_dimensions(g->x, label, &w->label_width, &w->label_height,
&w->label_baseline);
x_text_get_dimensions(g->x, DEFAULT_FONT, label,
&w->label_width, &w->label_height, &w->label_baseline);
LOGD("XY PLOT label wh %d %d\n", w->label_width, w->label_height);
w->wanted_width = width;