gsl-shell.git - gsl-shell

diff --git a/fox-gui/fx_plot_canvas.cpp b/fox-gui/fx_plot_canvas.cpp
index 595ff2eb..a6a0c90f 100644
--- a/fox-gui/fx_plot_canvas.cpp
+++ b/fox-gui/fx_plot_canvas.cpp

@@ -70,6 +70,32 @@ void fx_plot_canvas::draw(FXEvent* event)

m_dirty_flag = false;

}

+void fx_plot_canvas::update_region(const FXRectangle& r)

+{

+ if (!m_canvas || !m_plot)

+ return;

+

+ FXImage img(getApp(), NULL, IMAGE_OWNED|IMAGE_SHMI|IMAGE_SHMP, r.w, r.h);

+

+ const unsigned bpp = 32;

+ const unsigned pixel_size = bpp / 8;

+

+ agg::rendering_buffer dest;

+ dest.attach((agg::int8u*) img.getData(), r.w, r.h, -r.w * pixel_size);

+

+ agg::int8u* dd = m_rbuf.row_ptr(r.y) + r.x * pixel_size;

+ // m_img_data + (m_img_width * (m_img_height - r.y - 1) + r.x) * pixel_size;

+ agg::rendering_buffer src;

+ src.attach(dd, r.w, r.h, m_rbuf.stride());

+

+ dest.copy_from(src);

+

+ img.create();

+

+ FXDCWindow dc(this);

+ dc.drawImage(&img, r.x, r.y);

+}

+

void fx_plot_canvas::attach(plot_type* p)

{

m_plot = p;

diff --git a/fox-gui/fx_plot_canvas.h b/fox-gui/fx_plot_canvas.h
index 60c0ff40..fcbd787a 100644
--- a/fox-gui/fx_plot_canvas.h
+++ b/fox-gui/fx_plot_canvas.h

@@ -22,6 +22,7 @@ public:

void attach(plot_type* p);

void draw(FXEvent* event);

+ void update_region(const FXRectangle& r);

long on_cmd_paint(FXObject *, FXSelector, void *);

long on_update(FXObject *, FXSelector, void *);