diff options
author | scuri <scuri> | 2008-10-17 06:10:33 +0000 |
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committer | scuri <scuri> | 2008-10-17 06:10:33 +0000 |
commit | 7b52cc13af4e85f1ca2deb6b6c77de9c95ea0dcf (patch) | |
tree | d0857278bde2eff784227c57dcaf930346ceb7ac /src/wdhdcpy.c |
First commit - moving from LuaForge to SourceForge
Diffstat (limited to 'src/wdhdcpy.c')
-rw-r--r-- | src/wdhdcpy.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/src/wdhdcpy.c b/src/wdhdcpy.c new file mode 100644 index 0000000..f804d17 --- /dev/null +++ b/src/wdhdcpy.c @@ -0,0 +1,101 @@ +/** \file + * \brief WD Hardcopy Client function + * + * See Copyright Notice in cd.h + */ + +#include <stdlib.h> +#include <stdio.h> + +#include "cd.h" +#include "wd.h" + +/* from cd_private.h */ +int cdRound(double x); + +/* re-declared here to ignore CD_NO_OLD_INTERFACE definition */ +int cdActivate(cdCanvas* canvas); +cdCanvas* cdActiveCanvas(void); + +/* +** --------------------------------------------------------------- +** Private functions: +*/ + +static void _wdHdcpyDoit(cdCanvas *canvas, cdCanvas *canvas_copy, void (*draw_func)(cdCanvas *canvas_copy)) +{ + cdCanvas *old_active; + double left, right, bottom, top; /* canvas visualization window */ + int canvas_hsize, canvas_vsize; /* canvas sizes in pixels */ + int hdcpy_hsize, hdcpy_vsize; /* paper sizes in points */ + double canvas_vpr; /* canvas viewport distortion ratio */ + double hdcpy_vpr; /* paper viewport distortion ratio */ + int xc, yc; /* paper center in pixels */ + int xmin, xmax, ymin, ymax; /* paper viewport */ + + /* Activate canvas visualization surface. */ + if (cdCanvasActivate(canvas) != CD_OK) return; + + /* Get current canvas window parameters and sizes. */ + wdCanvasGetWindow(canvas, &left, &right, &bottom, &top); + cdCanvasGetSize(canvas, &canvas_hsize, &canvas_vsize, 0L, 0L); + + /* Activate hardcopy visualization surface. */ + if (cdCanvasActivate(canvas_copy) != CD_OK) return; + + /* Set window parameters on hardcopy surface. */ + wdCanvasWindow(canvas_copy, left, right, bottom, top); + + /* Adjust paper viewport, centralized, matching canvas viewport. */ + canvas_vpr = (double)canvas_vsize / (double)canvas_hsize; + cdCanvasGetSize(canvas_copy, &hdcpy_hsize, &hdcpy_vsize, 0L, 0L); + hdcpy_vpr = (double)hdcpy_vsize / (double)hdcpy_hsize; + xc = (int)((double)hdcpy_hsize/2.0); + yc = (int)((double)hdcpy_vsize/2.0); + + if (canvas_vpr < hdcpy_vpr) + { + xmin = 0; + xmax = hdcpy_hsize; + ymin = yc - (int)((double)hdcpy_hsize*(double)canvas_vpr/2.0); + ymax = yc + (int)((double)hdcpy_hsize*(double)canvas_vpr/2.0); + } + else + { + xmin = xc - (int)((double)hdcpy_vsize/(double)canvas_vpr/2.0); + xmax = xc + (int)((double)hdcpy_vsize/(double)canvas_vpr/2.0); + ymin = 0; + ymax = hdcpy_vsize; + } + + cdCanvasClipArea(canvas_copy, xmin, xmax, ymin, ymax); + cdCanvasClip(canvas_copy, CD_CLIPAREA); + wdCanvasViewport(canvas_copy, xmin, xmax, ymin, ymax); + + /* for backward compatibility */ + old_active = cdActiveCanvas(); + cdActivate(canvas_copy); + + /* Draw on hardcopy surface. */ + draw_func(canvas_copy); + + if (old_active) cdActivate(old_active); +} + +/* +** --------------------------------------------------------------- +** Entry points begin here: +*/ + +void wdCanvasHardcopy(cdCanvas *canvas, cdContext* ctx, void *data, void(*draw_func)(cdCanvas *canvas_copy)) +{ + /* Create a visualization surface. */ + cdCanvas *canvas_copy = cdCreateCanvas(ctx, data); + if (!canvas_copy) return; + + /* Do hardcopy. */ + _wdHdcpyDoit(canvas, canvas_copy, draw_func); + + /* Destroy visualization surface. */ + cdKillCanvas(canvas_copy); +} |