mantao/Plots.jl
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Merge pull request #361 from jheinen/dev

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gr: allow simple formulas or LaTeX equations
This commit is contained in:
Tom Breloff 2016-06-28 10:03:23 -04:00 committed by GitHub
commit 4b690ec9ad
1 changed files with 27 additions and 8 deletions
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35
src/backends/gr.jl
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@ -157,6 +157,25 @@ function gr_polyline(x, y, func = GR.polyline)
end end
end end
function gr_inqtext(x, y, s)
if length(s) >= 2 && s[1] == '$' && s[end] == '$'
GR.inqtextext(x, y, s[2:end-1])
elseif search(s, '\\') != 0 || search(s, '_') != 0 || search(s, '^') != 0
GR.inqtextext(x, y, s)
else
GR.inqtext(x, y, s)
end
end
function gr_text(x, y, s)
if length(s) >= 2 && s[1] == '$' && s[end] == '$'
GR.mathtex(x, y, s[2:end-1])
elseif search(s, '\\') != 0 || search(s, '_') != 0 || search(s, '^') != 0
GR.textext(x, y, s)
else
GR.text(x, y, s)
end
end
function gr_polaraxes(rmin, rmax) function gr_polaraxes(rmin, rmax)
GR.savestate() GR.savestate()
@ -569,14 +588,14 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
gr_set_font(sp[:titlefont]) gr_set_font(sp[:titlefont])
GR.settextalign(GR.TEXT_HALIGN_CENTER, GR.TEXT_VALIGN_TOP) GR.settextalign(GR.TEXT_HALIGN_CENTER, GR.TEXT_VALIGN_TOP)
gr_set_textcolor(sp[:foreground_color_title]) gr_set_textcolor(sp[:foreground_color_title])
GR.text(gr_view_xcenter(), viewport_subplot[4], sp[:title]) gr_text(gr_view_xcenter(), viewport_subplot[4], sp[:title])
end end
if xaxis[:guide] != "" if xaxis[:guide] != ""
gr_set_font(xaxis[:guidefont]) gr_set_font(xaxis[:guidefont])
GR.settextalign(GR.TEXT_HALIGN_CENTER, GR.TEXT_VALIGN_BOTTOM) GR.settextalign(GR.TEXT_HALIGN_CENTER, GR.TEXT_VALIGN_BOTTOM)
gr_set_textcolor(xaxis[:foreground_color_guide]) gr_set_textcolor(xaxis[:foreground_color_guide])
GR.text(gr_view_xcenter(), viewport_subplot[3], xaxis[:guide]) gr_text(gr_view_xcenter(), viewport_subplot[3], xaxis[:guide])
end end
if yaxis[:guide] != "" if yaxis[:guide] != ""
@ -584,7 +603,7 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
GR.settextalign(GR.TEXT_HALIGN_CENTER, GR.TEXT_VALIGN_TOP) GR.settextalign(GR.TEXT_HALIGN_CENTER, GR.TEXT_VALIGN_TOP)
GR.setcharup(-1, 0) GR.setcharup(-1, 0)
gr_set_textcolor(yaxis[:foreground_color_guide]) gr_set_textcolor(yaxis[:foreground_color_guide])
GR.text(viewport_subplot[1], gr_view_ycenter(), yaxis[:guide]) gr_text(viewport_subplot[1], gr_view_ycenter(), yaxis[:guide])
end end
GR.restorestate() GR.restorestate()
@ -751,11 +770,11 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
if 90 <= alpha < 270 if 90 <= alpha < 270
x[3] = x[2] - 0.05 x[3] = x[2] - 0.05
GR.settextalign(GR.TEXT_HALIGN_RIGHT, GR.TEXT_VALIGN_HALF) GR.settextalign(GR.TEXT_HALIGN_RIGHT, GR.TEXT_VALIGN_HALF)
GR.text(x[3] - 0.01, y[3], string(labels[i])) gr_text(x[3] - 0.01, y[3], string(labels[i]))
else else
x[3] = x[2] + 0.05 x[3] = x[2] + 0.05
GR.settextalign(GR.TEXT_HALIGN_LEFT, GR.TEXT_VALIGN_HALF) GR.settextalign(GR.TEXT_HALIGN_LEFT, GR.TEXT_VALIGN_HALF)
GR.text(x[3] + 0.01, y[3], string(labels[i])) gr_text(x[3] + 0.01, y[3], string(labels[i]))
end end
gr_polyline(x, y) gr_polyline(x, y)
a1 = a2 a1 = a2
@ -809,7 +828,7 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
else else
lab = series.d[:label] lab = series.d[:label]
end end
tbx, tby = GR.inqtext(0, 0, lab) tbx, tby = gr_inqtext(0, 0, lab)
w = max(w, tbx[3] - tbx[1]) w = max(w, tbx[3] - tbx[1])
end end
if w > 0 if w > 0
@ -865,7 +884,7 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
end end
GR.settextalign(GR.TEXT_HALIGN_LEFT, GR.TEXT_VALIGN_HALF) GR.settextalign(GR.TEXT_HALIGN_LEFT, GR.TEXT_VALIGN_HALF)
gr_set_textcolor(sp[:foreground_color_legend]) gr_set_textcolor(sp[:foreground_color_legend])
GR.text(xpos, ypos, lab) gr_text(xpos, ypos, lab)
ypos -= dy ypos -= dy
end end
end end
@ -879,7 +898,7 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
x, y, val = ann x, y, val = ann
x, y = GR.wctondc(x, y) x, y = GR.wctondc(x, y)
gr_set_font(val.font) gr_set_font(val.font)
GR.text(x, y, val.str) gr_text(x, y, val.str)
end end
GR.restorestate() GR.restorestate()
end end