implement PreviewOutputImage

1 files changed, 93 insertions, 0 deletions

diff --git a/src/PreviewOutputImage.cxx b/src/PreviewOutputImage.cxx
new file mode 100644
index 0000000..ba86edc
--- /dev/null
+++ b/src/PreviewOutputImage.cxx
@@ -0,0 +1,93 @@
+// 
+// DataImage routines.
+//
+// Copyright 2006 by Johannes Hofmann
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later 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
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library 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.
+//
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <Fl/Fl.H>
+#include <Fl/fl_draw.h>
+
+#include "PreviewOutputImage.H"
+
+PreviewOutputImage::PreviewOutputImage(int X, int Y, int W, int H): Fl_Widget(X, Y, W, H) {
+	d = 3;
+	data = NULL;
+}
+
+PreviewOutputImage::~PreviewOutputImage() {
+	if (data) {
+		free(data);
+	}
+}
+
+int
+PreviewOutputImage::init_internal(int w, int h) {
+	data = (uchar*) malloc(w * h * d);
+	memset(data, 0, w * h * d);
+	row = 0;
+	size(w, h);
+	return 0;
+}
+	
+
+
+int
+PreviewOutputImage::set_pixel_internal(int x, char r, char g, char b) {
+	if (!data) {
+		return 1;
+	}
+
+	long index = (row * w() * d + (x * d));
+	*(data+index+0) = r;
+	*(data+index+1) = g;
+	*(data+index+2) = b;
+
+	return 0;
+}
+
+int
+PreviewOutputImage::next_line_internal() {
+	row++;
+	if (row % (h() / 100) == 0) {
+		redraw();
+		Fl::check();
+	}
+	return 0;
+}
+
+int
+PreviewOutputImage::done_internal() {
+	return 0;
+}
+
+void
+PreviewOutputImage::draw() {
+	if (!data) {
+		return;
+	}
+	fl_push_clip(x(), y(), w(), h());
+
+	fl_draw_image(data, x(), y(), w(), h(), d);
+
+	fl_pop_clip();
+}
+