Created
July 18, 2009 23:15
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this is the code in gnome-system-monitor that draws the curves
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cr = gdk_cairo_create (g->disp->window); | |
cairo_set_line_width (cr, 1); | |
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); | |
cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND); | |
cairo_rectangle (cr, g->rmargin + g->indent + FRAME_WIDTH + 1, FRAME_WIDTH - 1, | |
g->draw_width - g->rmargin - g->indent - 1, g->real_draw_height + FRAME_WIDTH - 1); | |
cairo_clip(cr); | |
for (j = 0; j < g->n; ++j) { | |
cairo_move_to (cr, x_offset, (1.0f - g->data[0][j]) * g->real_draw_height); | |
gdk_cairo_set_source_color (cr, &(g->colors [j])); | |
for (i = 1; i < LoadGraph::NUM_POINTS; ++i) { | |
if (g->data[i][j] == -1.0f) | |
continue; | |
cairo_curve_to (cr, | |
x_offset - ((i - 0.5f) * g->graph_delx), | |
(1.0f - g->data[i-1][j]) * g->real_draw_height + 3.5f, | |
x_offset - ((i - 0.5f) * g->graph_delx), | |
(1.0f - g->data[i][j]) * g->real_draw_height + 3.5f, | |
x_offset - (i * g->graph_delx), | |
(1.0f - g->data[i][j]) * g->real_draw_height + 3.5f); | |
} | |
cairo_stroke (cr); | |
} |
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