height and width adjustment added to ggsave

src/draw.jl

@@ -235,10 +235,33 @@ function draw_ggplot(plot::GGPlot)
     end
 end
 
+function draw_ggplot(plot::GGPlot, size::Tuple)
+    axis = Makie.SpecApi.Axis(plot)
+    legend = build_legend(plot)
+
+    if isnothing(legend)
+        Makie.plot(
+            Makie.SpecApi.GridLayout(
+                axis
+            ), figure=(;size=size)
+        )
+    else
+        Makie.plot(
+            Makie.SpecApi.GridLayout(
+                [axis legend]
+            ), figure=(;size=size)
+        )
+    end
+end
+
 function draw_ggplot(plot_grid::GGPlotGrid)
     Makie.plot(plot_grid.grid)
 end
 
+function draw_ggplot(plot_grid::GGPlotGrid, size::Tuple)
+    Makie.plot(plot_grid.grid, figure=(;size=size))
+end
+
 try_convert(::Type{Any}, v, ::Any, ::Any) = v
 
 function try_convert(T::Type, v::S, arg, fname) where {S}

src/ggsave.jl

@@ -1,21 +1,26 @@
-function ggsave(path::String, plot::GGPlot; scale = 2)
-    save(path,
-    with_theme(plot.theme) do
-        draw_ggplot(plot)
-    end;
-    px_per_unit = scale)
-end
+function ggsave(path::String, plot::Union{GGPlot, GGPlotGrid}; 
+    scale = 2, height = nothing, width = nothing)
 
-function ggsave(plot::GGPlot, path::String; scale = 2)
-    save(path,
-        with_theme(plot.theme) do
-            draw_ggplot(plot)
-        end;
-        px_per_unit = scale)
-end
+    if xor(isnothing(height), isnothing(width))
+        throw("Specify either: both height and width OR neither height nor width.")
+    end
 
-function ggsave(plot::GGPlotGrid, path::String; scale = 2)
-    save(path, draw_ggplot(plot), px_per_unit = scale)
+    # does not support different themes per plot in a grid
+    theme = plot isa GGPlotGrid ? plot.plots[1].theme : plot.theme  
+
+    if !isnothing(height)
+        save(path,
+        with_theme(theme) do
+            draw_ggplot(plot, (width, height))
+        end; px_per_unit = scale)
+    else
+        save(path,
+        with_theme(theme) do
+            draw_ggplot(plot)
+        end; px_per_unit = scale)
+    end    
 end
 
-ggsave(path::String, plot::GGPlotGrid; scale = 2) = ggsave(plot, path; scale=scale)
+function ggsave(plot::GGPlot, path::String; scale = 2, height = nothing, width = nothing)
+    ggsave(path, plot; scale=scale, height=height, width=width)
+end