make console wrapped text drawing into its own function in preparation to move report view out of the console space type. (no functional changes)

also remove incorrect messages about the original copyright in the GPL headers.

3 files changed, 361 insertions, 0 deletions

diff --git a/source/blender/editors/space_info/CMakeLists.txt b/source/blender/editors/space_info/CMakeLists.txt
index 4187afd8df4..ff65efeead0 100644
--- a/source/blender/editors/space_info/CMakeLists.txt
+++ b/source/blender/editors/space_info/CMakeLists.txt
@@ -21,6 +21,7 @@
 
 SET(INC
 	../include
+	../../blenfont
 	../../blenkernel
 	../../blenlib
 	../../imbuf
@@ -33,6 +34,7 @@ SET(INC
 SET(SRC
 	info_ops.c
 	info_stats.c
+	textview.c
 	space_info.c
 )
 
diff --git a/source/blender/editors/space_info/textview.c b/source/blender/editors/space_info/textview.c
new file mode 100644
index 00000000000..24f31da657f
--- /dev/null
+++ b/source/blender/editors/space_info/textview.c
@@ -0,0 +1,307 @@
+/**
+ * $Id: console_draw.c 32840 2010-11-02 13:12:30Z campbellbarton $
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Contributor(s): Campbell Barton
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#include <math.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <limits.h>
+#include <assert.h>
+
+#include "BLF_api.h"
+
+#include "BKE_utildefines.h"
+
+#include "BIF_gl.h"
+#include "BIF_glutil.h"
+
+#include "ED_datafiles.h"
+
+#include "textview.h"
+
+
+static int mono= -1; // XXX needs proper storage and change all the BLF_* here!
+
+
+static void console_font_begin(TextViewContext *sc)
+{
+	if(mono == -1) {
+		mono= BLF_load_mem("monospace", (unsigned char*)datatoc_bmonofont_ttf, datatoc_bmonofont_ttf_size);
+	}
+
+	BLF_aspect(mono, 1.0);
+	BLF_size(mono, sc->lheight-2, 72);
+}
+
+typedef struct ConsoleDrawContext {
+	int cwidth;
+	int lheight;
+	int console_width; /* number of characters that fit into the width of the console (fixed width) */
+	int winx;
+	int ymin, ymax;
+	int *xy; // [2]
+	int *sel; // [2]
+	int *pos_pick; // bottom of view == 0, top of file == combine chars, end of line is lower then start. 
+	int *mval; // [2]
+	int draw;
+} ConsoleDrawContext;
+
+static void console_draw_sel(int sel[2], int xy[2], int str_len_draw, int cwidth, int lheight)
+{
+	if(sel[0] <= str_len_draw && sel[1] >= 0) {
+		int sta = MAX2(sel[0], 0);
+		int end = MIN2(sel[1], str_len_draw);
+
+		glEnable(GL_POLYGON_STIPPLE);
+		glPolygonStipple(stipple_halftone);
+		glEnable( GL_BLEND );
+		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+		glColor4ub(255, 255, 255, 96);
+
+		glRecti(xy[0]+(cwidth*sta), xy[1]-2 + lheight, xy[0]+(cwidth*end), xy[1]-2);
+
+		glDisable(GL_POLYGON_STIPPLE);
+		glDisable( GL_BLEND );
+	}
+}
+
+
+/* return 0 if the last line is off the screen
+ * should be able to use this for any string type */
+
+static int console_draw_string(ConsoleDrawContext *cdc, char *str, int str_len, unsigned char *fg, unsigned char *bg)
+{
+#define STEP_SEL(value) cdc->sel[0] += (value); cdc->sel[1] += (value)
+	int rct_ofs= cdc->lheight/4;
+	int tot_lines = (str_len/cdc->console_width)+1; /* total number of lines for wrapping */
+	int y_next = (str_len > cdc->console_width) ? cdc->xy[1]+cdc->lheight*tot_lines : cdc->xy[1]+cdc->lheight;
+
+	/* just advance the height */
+	if(cdc->draw==0) {
+		if(cdc->pos_pick && (cdc->mval[1] != INT_MAX)) {
+			if(cdc->xy[1] <= cdc->mval[1]) {
+				if((y_next >= cdc->mval[1])) {
+					int ofs = (int)floor(((float)cdc->mval[0] / (float)cdc->cwidth));
+
+					/* wrap */
+					if(str_len > cdc->console_width)
+						ofs += (cdc->console_width * ((int)((((float)(y_next - cdc->mval[1]) / (float)(y_next-cdc->xy[1])) * tot_lines))));
+	
+					CLAMP(ofs, 0, str_len);
+					*cdc->pos_pick += str_len - ofs;
+				} else
+					*cdc->pos_pick += str_len + 1;
+			}
+		}
+
+		cdc->xy[1]= y_next;
+		return 1;
+	}
+	else if (y_next-cdc->lheight < cdc->ymin) {
+		/* have not reached the drawable area so don't break */
+		cdc->xy[1]= y_next;
+
+		/* adjust selection even if not drawing */
+		if(cdc->sel[0] != cdc->sel[1]) {
+			STEP_SEL(-(str_len + 1));
+		}
+
+		return 1;
+	}
+
+	if(str_len > cdc->console_width) { /* wrap? */
+		const int initial_offset= ((tot_lines-1) * cdc->console_width);
+		char *line_stride= str + initial_offset;	/* advance to the last line and draw it first */
+		char eol;													/* baclup the end of wrapping */
+		
+		int sel_orig[2];
+		VECCOPY2D(sel_orig, cdc->sel);
+
+		/* invert and swap for wrapping */
+		cdc->sel[0] = str_len - sel_orig[1];
+		cdc->sel[1] = str_len - sel_orig[0];
+		
+		if(bg) {
+			glColor3ubv(bg);
+			glRecti(0, cdc->xy[1]-rct_ofs, cdc->winx, (cdc->xy[1]+(cdc->lheight*tot_lines))+rct_ofs);
+		}
+
+		glColor3ubv(fg);
+
+		/* last part needs no clipping */
+		BLF_position(mono, cdc->xy[0], cdc->xy[1], 0);
+		BLF_draw(mono, line_stride);
+
+		if(cdc->sel[0] != cdc->sel[1]) {
+			STEP_SEL(-initial_offset);
+			// glColor4ub(255, 0, 0, 96); // debug
+			console_draw_sel(cdc->sel, cdc->xy, str_len % cdc->console_width, cdc->cwidth, cdc->lheight);
+			STEP_SEL(cdc->console_width);
+			glColor3ubv(fg);
+		}
+
+		cdc->xy[1] += cdc->lheight;
+
+		line_stride -= cdc->console_width;
+		
+		for(; line_stride >= str; line_stride -= cdc->console_width) {
+			eol = line_stride[cdc->console_width];
+			line_stride[cdc->console_width]= '\0';
+			
+			BLF_position(mono, cdc->xy[0], cdc->xy[1], 0);
+			BLF_draw(mono, line_stride);
+			
+			if(cdc->sel[0] != cdc->sel[1]) {
+				// glColor4ub(0, 255, 0, 96); // debug
+				console_draw_sel(cdc->sel, cdc->xy, cdc->console_width, cdc->cwidth, cdc->lheight);
+				STEP_SEL(cdc->console_width);
+				glColor3ubv(fg);
+			}
+
+			cdc->xy[1] += cdc->lheight;
+
+			line_stride[cdc->console_width] = eol; /* restore */
+			
+			/* check if were out of view bounds */
+			if(cdc->xy[1] > cdc->ymax)
+				return 0;
+		}
+
+		VECCOPY2D(cdc->sel, sel_orig);
+		STEP_SEL(-(str_len + 1));
+	}
+	else { /* simple, no wrap */
+
+		if(bg) {
+			glColor3ubv(bg);
+			glRecti(0, cdc->xy[1]-rct_ofs, cdc->winx, cdc->xy[1]+cdc->lheight-rct_ofs);
+		}
+
+		glColor3ubv(fg);
+
+		BLF_position(mono, cdc->xy[0], cdc->xy[1], 0);
+		BLF_draw(mono, str);
+		
+		if(cdc->sel[0] != cdc->sel[1]) {
+			int isel[2];
+
+			isel[0]= str_len - cdc->sel[1];
+			isel[1]= str_len - cdc->sel[0];
+
+			// glColor4ub(255, 255, 0, 96); // debug
+			console_draw_sel(isel, cdc->xy, str_len, cdc->cwidth, cdc->lheight);
+			STEP_SEL(-(str_len + 1));
+		}
+
+		cdc->xy[1] += cdc->lheight;
+
+		if(cdc->xy[1] > cdc->ymax)
+			return 0;
+	}
+
+	return 1;
+#undef STEP_SEL
+}
+
+#define CONSOLE_DRAW_MARGIN 4
+#define CONSOLE_DRAW_SCROLL 16
+
+int textview_draw(TextViewContext *tvc, int draw, int mval[2], void **mouse_pick, int *pos_pick)
+{
+	ConsoleDrawContext cdc= {0};
+
+	int x_orig=CONSOLE_DRAW_MARGIN, y_orig=CONSOLE_DRAW_MARGIN;
+	int xy[2], y_prev;
+	int sel[2]= {-1, -1}; /* defaults disabled */
+	unsigned char fg[3], bg[3];
+
+	console_font_begin(tvc);
+
+	xy[0]= x_orig; xy[1]= y_orig;
+
+	if(mval[1] != INT_MAX)
+		mval[1] += (tvc->ymin + CONSOLE_DRAW_MARGIN);
+
+	if(pos_pick)
+		*pos_pick = 0;
+
+	/* constants for the sequencer context */
+	cdc.cwidth= (int)BLF_fixed_width(mono);
+	assert(cdc.cwidth > 0);
+	cdc.lheight= tvc->lheight;
+	cdc.console_width= (tvc->winx - (CONSOLE_DRAW_SCROLL + CONSOLE_DRAW_MARGIN*2) ) / cdc.cwidth;
+	cdc.winx= tvc->winx-(CONSOLE_DRAW_MARGIN+CONSOLE_DRAW_SCROLL);
+	cdc.ymin= tvc->ymin;
+	cdc.ymax= tvc->ymax;
+	cdc.xy= xy;
+	cdc.sel= sel;
+	cdc.pos_pick= pos_pick;
+	cdc.mval= mval;
+	cdc.draw= draw;
+
+	/* shouldnt be needed */
+	tvc->cwidth= cdc.cwidth;
+	tvc->iter_index= 0;
+
+	if(tvc->sel_start != tvc->sel_end) {
+		sel[0]= tvc->sel_start;
+		sel[1]= tvc->sel_end;
+	}
+
+	if(tvc->begin(tvc)) {
+	
+		do {
+			char *ext_line;
+			int ext_len;
+			int color_flag= 0;
+
+			y_prev= xy[1];
+
+			if(draw)
+				color_flag= tvc->line_color(tvc, fg, bg);
+
+			tvc->line_get(tvc, &ext_line, &ext_len);
+
+			if(!console_draw_string(&cdc, ext_line, ext_len, (color_flag & TVC_LINE_FG) ? fg : NULL, (color_flag & TVC_LINE_BG) ? bg : NULL)) {
+				/* when drawing, if we pass v2d->cur.ymax, then quit */
+				if(draw) {
+					break; /* past the y limits */
+				}
+			}
+
+			if((mval[1] != INT_MAX) && (mval[1] >= y_prev && mval[1] <= xy[1])) {
+				*mouse_pick= (void *)tvc->iter;
+				break;
+			}
+
+			tvc->iter_index++;
+
+		} while(tvc->step(tvc));
+	}
+
+	tvc->end(tvc);
+
+	xy[1] += tvc->lheight * 2;
+
+	return xy[1] - y_orig;
+}
diff --git a/source/blender/editors/space_info/textview.h b/source/blender/editors/space_info/textview.h
new file mode 100644
index 00000000000..9e29cd76436
--- /dev/null
+++ b/source/blender/editors/space_info/textview.h
@@ -0,0 +1,52 @@
+/**
+ * $Id: console_draw.c 32840 2010-11-02 13:12:30Z campbellbarton $
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Contributor(s): Campbell Barton
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+typedef struct TextViewContext {
+	int lheight;
+	int sel_start, sel_end;
+
+	/* view settings */
+	int cwidth; /* shouldnt be needed! */
+	int winx;
+	int ymin, ymax;
+	
+	/* callbacks */
+	int (*begin)(struct TextViewContext *tvc);
+	void (*end)(struct TextViewContext *tvc);
+	void *arg1;
+	void *arg2;
+
+	/* iterator */
+	int (*step)(struct TextViewContext *tvc);
+	int (*line_get)(struct TextViewContext *tvc, char **, int *);
+	int (*line_color)(struct TextViewContext *tvc, unsigned char fg[3], unsigned char bg[3]);
+	void *iter;
+	int iter_index;
+
+} TextViewContext;
+
+int textview_draw(struct TextViewContext *tvc, int draw, int mval[2], void **mouse_pick, int *pos_pick);
+
+#define TVC_LINE_FG	(1<<0)
+#define TVC_LINE_BG	(1<<1)