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gr: added support for aspect_ratio

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This commit is contained in:
Josef Heinen 2016-09-05 13:23:43 +02:00
parent 31ea149820
commit c65c7ae252
1 changed files with 23 additions and 2 deletions
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25
src/backends/gr.jl
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@ -465,6 +465,28 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
# the viewports for this subplot
viewport_subplot = gr_viewport_from_bbox(bbox(sp), w, h, viewport_canvas)
viewport_plotarea[:] = gr_viewport_from_bbox(plotarea(sp), w, h, viewport_canvas)
# get data limits
data_lims = gr_xy_axislims(sp)
ratio = sp[:aspect_ratio]
if ratio != :none
if ratio == :equal
ratio = 1
end
viewport_ratio = (viewport_plotarea[2] - viewport_plotarea[1]) / (viewport_plotarea[4] - viewport_plotarea[3])
window_ratio = (data_lims[2] - data_lims[1]) / (data_lims[4] - data_lims[3]) / ratio
if window_ratio < viewport_ratio
viewport_center = 0.5 * (viewport_plotarea[1] + viewport_plotarea[2])
viewport_size = (viewport_plotarea[2] - viewport_plotarea[1]) * window_ratio / viewport_ratio
viewport_plotarea[1] = viewport_center - 0.5 * viewport_size
viewport_plotarea[2] = viewport_center + 0.5 * viewport_size
elseif window_ratio > viewport_ratio
viewport_center = 0.5 * (viewport_plotarea[3] + viewport_plotarea[4])
viewport_size = (viewport_plotarea[4] - viewport_plotarea[3]) * viewport_ratio / window_ratio
viewport_plotarea[3] = viewport_center - 0.5 * viewport_size
viewport_plotarea[4] = viewport_center + 0.5 * viewport_size
end
end
# fill in the plot area background
bg = plot_color(sp[:background_color_inside])
@ -502,8 +524,7 @@ function gr_display(sp::Subplot{GRBackend}, w, h, viewport_canvas)
yaxis = sp[:yaxis]
zaxis = sp[:zaxis]
# get data limits and set the scale flags and window
data_lims = gr_xy_axislims(sp)
# set the scale flags and window
xmin, xmax, ymin, ymax = data_lims
scale = 0
xtick, ytick = 1, 1