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static void draw_line(char *s)//画线，^_^，够复杂的
{
#ifdef X11
char *p;
cur_x = text_start_x;
cur_y += font_ascent();
int cur_y_add = 0;
short font_h = font_height();
/* find specials and draw stuff */
p = s;
while (*p) {
if (*p == SPECIAL_CHAR) {
int w = 0;
/* draw string before special */
*p = '\0';
draw_string(s);
*p = SPECIAL_CHAR;
s = p + 1;
/* draw special */
switch (specials[special_index].type) {
case HORIZONTAL_LINE:
{
int h =
specials[special_index].height;
int mid = font_ascent() / 2;
w = text_start_x + text_width -
cur_x;
XSetLineAttributes(display,
window.gc, h,
LineSolid,
CapButt,
JoinMiter);
XDrawLine(display, window.drawable,
window.gc, cur_x,
cur_y - mid / 2,
cur_x + w,
cur_y - mid / 2);
}
break;
case STIPPLED_HR:
{
int h =
specials[special_index].height;
int s =
specials[special_index].arg;
int mid = font_ascent() / 2;
char ss[2] = { s, s };
w = text_start_x + text_width -
cur_x - 1;
XSetLineAttributes(display,
window.gc, h,
LineOnOffDash,
CapButt,
JoinMiter);
XSetDashes(display, window.gc, 0,
ss, 2);
XDrawLine(display, window.drawable,
window.gc, cur_x,
cur_y - mid / 2,
cur_x + w,
cur_y - mid / 2);
}
break;
case BAR:
{
if (cur_x - text_start_x > maximum_width && maximum_width > 0) {
break;
}
int h =
specials[special_index].height;
int bar_usage =
specials[special_index].arg;
int by = cur_y - (font_ascent() / 2) - 1;
if (h < font_height()) {
by -= h / 2 - 1;
}
w = specials[special_index].width;
if (w == 0)
w = text_start_x +
text_width - cur_x - 1;
if (w < 0)
w = 0;
XSetLineAttributes(display,
window.gc, 1,
LineSolid,
CapButt,
JoinMiter);
XDrawRectangle(display,
window.drawable,
window.gc, cur_x,
by, w, h);
XFillRectangle(display,
window.drawable,
window.gc, cur_x,
by,
w * bar_usage / 255,
h);
if (specials[special_index].
height > cur_y_add
&& specials[special_index].
height > font_h) {
cur_y_add =
specials
[special_index].height;
}
}
break;
case GRAPH:
{
if (cur_x - text_start_x > maximum_width && maximum_width > 0) {
break;
}
int h =
specials[special_index].height;
unsigned long last_colour = current_color;
int by = cur_y - (font_ascent()/2) - 1;
if (h < font_height()) {
by -= h / 2 - 1;
}
w = specials[special_index].width;
if (w == 0)
w = text_start_x + text_width - cur_x - 1;
if (w < 0)
w = 0;
if (draw_graph_borders) {
XSetLineAttributes(display, window.gc, 1, LineSolid, CapButt, JoinMiter);
XDrawRectangle(display,window.drawable, window.gc, cur_x, by, w, h);
}
XSetLineAttributes(display,
window.gc, 1,
LineSolid,
CapButt,
JoinMiter);
int i;
int j = 0;
int gradient_size = 0;
float gradient_factor = 0;
float gradient_update = 0;
unsigned long tmpcolour = current_color;
if (specials[special_index].last_colour != 0 || specials[special_index].first_colour != 0) {
tmpcolour = specials[special_index].last_colour;
gradient_size = gradient_max(specials[special_index].last_colour, specials[special_index].first_colour);
gradient_factor = (float)gradient_size / (w - 2);
}
for (i = w - 2; i > -1; i--) {
if (specials[special_index].last_colour != 0 || specials[special_index].first_colour != 0) {
XSetForeground(display, window.gc, tmpcolour);
gradient_update += gradient_factor;
while (gradient_update > 0) {
tmpcolour = do_gradient(tmpcolour, specials[special_index].first_colour);
gradient_update--;
}
}
if ((w - i) / ((float) (w - 2) / (specials[special_index].graph_width)) > j && j < MAX_GRAPH_DEPTH - 3) {
j++;
}
XDrawLine(display, window.drawable, window.gc, cur_x + i + 1, by + h, cur_x + i + 1, by + h - specials[special_index].graph[j] * (h - 1) / specials[special_index].graph_scale); /* this is mugfugly, but it works */
}
if (specials[special_index].
height > cur_y_add
&& specials[special_index].
height > font_h) {
cur_y_add =
specials
[special_index].height;
}
/* if (draw_mode == BG) {
set_foreground_color(default_bg_color);
}
else if (draw_mode == OUTLINE) {
set_foreground_color(default_out_color);
} else {
set_foreground_color(default_fg_color);
}*/
set_foreground_color(last_colour);
}
break;
case FONT:
{
int old = font_ascent();
cur_y -= font_ascent();
selected_font = specials[special_index].font_added;
if (cur_y + font_ascent() < cur_y + old) {
cur_y += old;
} else {
cur_y += font_ascent();
}
set_font();
}
break;
case FG:
if (draw_mode == FG)
set_foreground_color(specials
[special_index].
arg);
break;
case BG:
if (draw_mode == BG)
set_foreground_color(specials
[special_index].
arg);
break;
case OUTLINE:
if (draw_mode == OUTLINE)
set_foreground_color(specials
[special_index].
arg);
break;
case OFFSET:
w += specials[special_index].arg;
break;
case VOFFSET:
cur_y += specials[special_index].arg;
break;
case GOTO:
if (specials[special_index].arg >= 0)
cur_x = (int)specials[special_index].arg;
break;
case TAB:
{
int start = specials[special_index].arg;
int step = specials[special_index].width;
if (!step || step < 0)
step = 10;
w = step - (cur_x - text_start_x - start) % step;
}
break;
case ALIGNR:
{
int pos_x = text_start_x + text_width - get_string_width_special(s) /*+ border_margin*/;
/*printf("pos_x %i text_start_x %i text_width %i cur_x %i get_string_width(p) %i gap_x %i specials[special_index].arg %i border_margin %i border_width %i\n", pos_x, text_start_x, text_width, cur_x, get_string_width_special(s), gap_x, specials[special_index].arg, border_margin, border_width);*/
if (pos_x > specials[special_index].arg && pos_x > cur_x) {
cur_x = pos_x - specials[special_index].arg;
}
}
break;
case ALIGNC:
{
int pos_x = (text_width)/2 - get_string_width_special(s)/2 - (cur_x - text_start_x);
/*int pos_x = text_start_x + text_width/2 - get_string_width_special(s)/2;*/
/*printf("pos_x %i text_start_x %i text_width %i cur_x %i get_string_width(p) %i gap_x %i specials[special_index].arg %i\n", pos_x, text_start_x, text_width, cur_x, get_string_width(s), gap_x, specials[special_index].arg);*/
if (pos_x >
specials[special_index].arg)
w = pos_x -
specials
[special_index].arg;
}
break;
}
cur_x += w;
special_index++;
}
p++;
}
#else
draw_string(s);
#endif
#ifdef X11
if (cur_y_add > 0) {
cur_y += cur_y_add;
cur_y -= font_descent();
}
draw_string(s);
cur_y += font_descent();
#endif /* X11 */
}
static void draw_text()//画出文本
{
#ifdef X11
cur_y = text_start_y;
/* draw borders */
if (draw_borders && border_width > 0) {
unsigned int b = (border_width + 1) / 2;
if (stippled_borders) {
char ss[2] =
{ stippled_borders, stippled_borders };
XSetLineAttributes(display, window.gc,
border_width, LineOnOffDash,
CapButt, JoinMiter);
XSetDashes(display, window.gc, 0, ss, 2);
} else {
XSetLineAttributes(display, window.gc,
border_width, LineSolid,
CapButt, JoinMiter);
}
XDrawRectangle(display, window.drawable, window.gc,
text_start_x - border_margin + b,
text_start_y - border_margin + b,
text_width + border_margin * 2 - 1 - b * 2,
text_height + border_margin * 2 - 1 -
b * 2);
}
/* draw text */
special_index = 0;
#endif /* X11 */
for_each_line(text_buffer, draw_line);//每一个text区域都要使用draw_line来更新
}
static void draw_stuff()//主要的画图函数
{
#ifdef X11
selected_font = 0;
if (draw_shades && !draw_outline) {
text_start_x++;
text_start_y++;
set_foreground_color(default_bg_color);
draw_mode = BG;
draw_text();
text_start_x--;
text_start_y--;
}
if (draw_outline) {
selected_font = 0;
int i, j;
for (i = -1; i < 2; i++)
for (j = -1; j < 2; j++) {
if (i == 0 && j == 0)
continue;
text_start_x += i;
text_start_y += j;
set_foreground_color(default_out_color);
draw_mode = OUTLINE;
draw_text();
text_start_x -= i;
text_start_y -= j;
}
}
set_foreground_color(default_fg_color);
draw_mode = FG;
#endif /* X11 */
draw_text();
#ifdef X11
#ifdef HAVE_XDBE
if (use_xdbe) {
XdbeSwapInfo swap;
swap.swap_window = window.window;
swap.swap_action = XdbeBackground;
XdbeSwapBuffers(display, &swap, 1);
}
#endif
#endif /* X11 */
}
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