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{
Free Pascal port of the OpenPTC C++ library.
Copyright (C) 2001-2010 Nikolay Nikolov (nickysn@users.sourceforge.net)
Original C++ version by Glenn Fiedler (ptc@gaffer.org)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version
with the following modification:
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent modules,and
to copy and distribute the resulting executable under terms of your choice,
provided that you also meet, for each linked independent module, the terms
and conditions of the license of that module. An independent module is a
module which is not derived from or based on this library. If you modify
this library, you may extend this exception to your version of the library,
but you are not obligated to do so. If you do not wish to do so, delete this
exception statement from your version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
}
function ptc_surface_create(width, height: Integer; format: TPTC_FORMAT): TPTC_SURFACE;
begin
try
ptc_surface_create := TPTC_SURFACE(TPTCSurface.Create(width, height, TPTCFormat(format)));
except
on error: TPTCError do
begin
ptc_exception_handle(error);
ptc_surface_create := nil;
end;
end;
end;
procedure ptc_surface_destroy(obj: TPTC_SURFACE);
begin
if obj = nil then
exit;
try
TPTCBaseSurface(obj).Destroy;
except
on error: TPTCError do
ptc_exception_handle(error);
end;
end;
procedure ptc_surface_copy(obj: TPTC_SURFACE; surface: TPTC_SURFACE);
begin
try
TPTCBaseSurface(obj).copy(TPTCBaseSurface(surface));
except
on error: TPTCError do
ptc_exception_handle(error);
end;
end;
procedure ptc_surface_copy_area(obj: TPTC_SURFACE; surface: TPTC_SURFACE; source, destination: TPTC_AREA);
begin
try
TPTCBaseSurface(obj).copy(TPTCBaseSurface(surface), TPTCArea(source), TPTCArea(destination));
except
on error: TPTCError do
ptc_exception_handle(error);
end;
end;
function ptc_surface_lock(obj: TPTC_SURFACE): Pointer;
begin
try
ptc_surface_lock := TPTCBaseSurface(obj).lock;
except
on error: TPTCError do
begin
ptc_exception_handle(error);
ptc_surface_lock := nil;
end;
end;
end;
procedure ptc_surface_unlock(obj: TPTC_SURFACE);
begin
try
TPTCBaseSurface(obj).unlock;
except
on error: TPTCError do
ptc_exception_handle(error);
end;
end;
procedure ptc_surface_load(obj: TPTC_SURFACE; pixels: Pointer; width, height, pitch: Integer; format: TPTC_FORMAT; palette: TPTC_PALETTE);
begin
try
TPTCBaseSurface(obj).load(pixels, width, height, pitch, TPTCFormat(format), TPTCPalette(palette));
except
on error: TPTCError do
ptc_exception_handle(error);
end;
end;
procedure ptc_surface_load_area(obj: TPTC_SURFACE; pixels: Pointer; width, height, pitch: Integer; format: TPTC_FORMAT; palette: TPTC_PALETTE; source, destination: TPTC_AREA);
begin
try
TPTCBaseSurface(obj).load(pixels, width, height, pitch, TPTCFormat(format), TPTCPalette(palette), TPTCArea(source), TPTCArea(destination));
except
on error: TPTCError do
ptc_exception_handle(error);
end;
end;
procedure ptc_surface_save(obj: TPTC_SURFACE; pixels: Pointer; width, height, pitch: Integer; format: TPTC_FORMAT; palette: TPTC_PALETTE);
begin
try
TPTCBaseSurface(obj).save(pixels, width, height, pitch, TPTCFormat(format), TPTCPalette(palette));
except
on error: TPTCError do
ptc_exception_handle(error);
end;
end;
procedure ptc_surface_save_area(obj: TPTC_SURFACE; pixels: Pointer; width, height, pitch: Integer; format: TPTC_FORMAT; palette: TPTC_PALETTE; source, destination: TPTC_AREA);
begin
try
TPTCBaseSurface(obj).save(pixels, width, height, pitch, TPTCFormat(format), TPTCPalette(palette), TPTCArea(source), TPTCArea(destination));
except
on error: TPTCError do
ptc_exception_handle(error);
end;
end;
procedure ptc_surface_clear(obj: TPTC_SURFACE);
begin
try
TPTCBaseSurface(obj).clear;
except
on error: TPTCError do
ptc_exception_handle(error);
end;
end;
procedure ptc_surface_clear_color(obj: TPTC_SURFACE; color: TPTC_COLOR);
begin
try
TPTCBaseSurface(obj).clear(TPTCColor(color));
except
on error: TPTCError do
ptc_exception_handle(error);
end;
end;
procedure ptc_surface_clear_color_area(obj: TPTC_SURFACE; color: TPTC_COLOR; area: TPTC_AREA);
begin
try
TPTCBaseSurface(obj).clear(TPTCColor(color), TPTCArea(area));
except
on error: TPTCError do
ptc_exception_handle(error);
end;
end;
procedure ptc_surface_palette_set(obj: TPTC_SURFACE; palette: TPTC_PALETTE);
begin
try
TPTCBaseSurface(obj).palette(TPTCPalette(palette));
except
on error: TPTCError do
ptc_exception_handle(error);
end;
end;
function ptc_surface_palette_get(obj: TPTC_SURFACE): TPTC_PALETTE;
begin
try
ptc_surface_palette_get := TPTC_PALETTE(TPTCBaseSurface(obj).palette);
except
on error: TPTCError do
begin
ptc_exception_handle(error);
ptc_surface_palette_get := nil;
end;
end;
end;
procedure ptc_surface_clip_set(obj: TPTC_SURFACE; area: TPTC_AREA);
begin
try
TPTCBaseSurface(obj).clip(TPTCArea(area));
except
on error: TPTCError do
ptc_exception_handle(error);
end;
end;
function ptc_surface_width(obj: TPTC_SURFACE): Integer;
begin
try
ptc_surface_width := TPTCBaseSurface(obj).width;
except
on error: TPTCError do
begin
ptc_exception_handle(error);
ptc_surface_width := 0;
end;
end;
end;
function ptc_surface_height(obj: TPTC_SURFACE): Integer;
begin
try
ptc_surface_height := TPTCBaseSurface(obj).height;
except
on error: TPTCError do
begin
ptc_exception_handle(error);
ptc_surface_height := 0;
end;
end;
end;
function ptc_surface_pitch(obj: TPTC_SURFACE): Integer;
begin
try
ptc_surface_pitch := TPTCBaseSurface(obj).pitch;
except
on error: TPTCError do
begin
ptc_exception_handle(error);
ptc_surface_pitch := 0;
end;
end;
end;
function ptc_surface_area(obj: TPTC_SURFACE): TPTC_AREA;
begin
try
ptc_surface_area := TPTC_AREA(TPTCBaseSurface(obj).area);
except
on error: TPTCError do
begin
ptc_exception_handle(error);
ptc_surface_area := nil;
end;
end;
end;
function ptc_surface_clip(obj: TPTC_SURFACE): TPTC_AREA;
begin
try
ptc_surface_clip := TPTC_AREA(TPTCBaseSurface(obj).clip);
except
on error: TPTCError do
begin
ptc_exception_handle(error);
ptc_surface_clip := nil;
end;
end;
end;
function ptc_surface_format(obj: TPTC_SURFACE): TPTC_FORMAT;
begin
try
ptc_surface_format := TPTC_FORMAT(TPTCBaseSurface(obj).format);
except
on error: TPTCError do
begin
ptc_exception_handle(error);
ptc_surface_format := nil;
end;
end;
end;
function ptc_surface_option(obj: TPTC_SURFACE; _option: string): Boolean;
begin
try
ptc_surface_option := TPTCBaseSurface(obj).option(_option);
except
on error: TPTCError do
begin
ptc_exception_handle(error);
ptc_surface_option := False;
end;
end;
end;
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