Imported Upstream version 0.72
This commit is contained in:
TANIGUCHI Takaki
377
curve.c
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377
curve.c
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/* dvdisaster: Additional error correction for optical media.
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* Copyright (C) 2004-2009 Carsten Gnoerlich.
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* Project home page: http://www.dvdisaster.com
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* Email: carsten@dvdisaster.com -or- cgnoerlich@fsfe.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA,
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* or direct your browser at http://www.gnu.org.
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*/
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#include "dvdisaster.h"
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/***
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*** Constructors and destructors
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***/
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/*
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* Initialize the curve
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*/
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Curve* CreateCurve(GtkWidget *widget, char *left_label, char *left_format, int n_values, int bottom_format)
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{ Curve *curve = g_malloc0(sizeof(Curve));
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curve->widget = widget;
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curve->layout = gtk_widget_create_pango_layout(widget, NULL);
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curve->leftLabel = g_strdup(left_label);
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curve->leftFormat = g_strdup(left_format);
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curve->bottomFormat = bottom_format;
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curve->fvalue = g_malloc0(sizeof(gdouble)*(n_values+1));
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curve->ivalue = g_malloc0(sizeof(gint)*(n_values+1));
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curve->lvalue = g_malloc0(sizeof(gint)*(n_values+1));
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curve->lastValueIdx = n_values;
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curve->maxX = 1;
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curve->maxY = 1;
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curve->logMaxY = 1;
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if(bottom_format != CURVE_PERCENT)
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curve->margin = 2;
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return curve;
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}
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/*
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* Get rid of it
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*/
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void FreeCurve(Curve *curve)
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{
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g_object_unref(curve->layout);
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g_free(curve->leftLabel);
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if(curve->leftLogLabel)
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g_free(curve->leftLogLabel);
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g_free(curve->leftFormat);
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g_free(curve->fvalue);
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g_free(curve->ivalue);
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g_free(curve->lvalue);
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g_free(curve);
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}
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/*
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* Reset the values
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*/
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void ZeroCurve(Curve *curve)
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{ int i;
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if(curve)
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for(i=0; i<=curve->lastValueIdx; i++)
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{ curve->fvalue[i] = -1.0;
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curve->ivalue[i] = 0;
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curve->lvalue[i] = 0;
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}
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}
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/***
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*** Auxiliary functions
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***/
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/*
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* Calculate pixel coords from curve values
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*/
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int CurveX(Curve *curve, gdouble x)
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{ gdouble width = (curve->rightX - curve->leftX - curve->margin);
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return 1 + curve->leftX + ((gdouble)x * width) / 1000.0;
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}
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int CurveLX(Curve *curve, gdouble x)
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{ gdouble width = (curve->rightX - curve->leftX - curve->margin);
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return 1 + curve->leftX + (x * width) / (gdouble)curve->maxX;
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}
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int CurveY(Curve *curve, gdouble y)
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{ gdouble hfact;
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hfact = (gdouble)(curve->bottomY - curve->topY)
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/ (gdouble)curve->maxY;
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return curve->bottomY - y * hfact;
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}
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int CurveLogY(Curve *curve, gdouble y) /* not really a log */
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{ gdouble hfact;
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if(y<1) return curve->bottomLY;
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hfact = (gdouble)(curve->bottomLY - curve->topLY);
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if(y==1) return curve->bottomLY - ((log(2)/log(curve->logMaxY)) * hfact)/2;
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return curve->bottomLY - (log(y)/log(curve->logMaxY)) * hfact;
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}
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/***
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*** Calculate the curve geometry
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***/
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void UpdateCurveGeometry(Curve *curve, char *largest_left_label, int right_padding)
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{ GtkAllocation *a = &curve->widget->allocation;
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int w,h;
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/* Top and bottom margins */
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SetText(curve->layout, curve->leftLabel, &w, &h);
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curve->topY = h + 10;
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SetText(curve->layout, "0123456789", &w, &h);
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curve->bottomY = a->height - h - 10;
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/* Left and right margins */
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SetText(curve->layout, largest_left_label, &w, &h);
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curve->leftX = 5 + 6 + 3 + w;
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curve->rightX = a->width - right_padding;
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/* Add space for the lograithmic curve */
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if(curve->enable & DRAW_LCURVE)
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{ int height = curve->bottomY - curve->topY;
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curve->bottomLY = curve->bottomY;
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curve->bottomY -= height/4;
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curve->topLY = curve->bottomY + h + 15;
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}
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}
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/***
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*** Redraw the coordinate axes
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***/
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void RedrawAxes(Curve *curve)
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{ GdkDrawable *d = curve->widget->window;
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int i,w,h,x,y;
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int yg=0;
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int step;
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int bottom_y;
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/* Draw and label the left coordinate axis */
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->foreground);
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gdk_draw_line(d, Closure->drawGC,
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curve->leftX, curve->topY, curve->leftX, curve->bottomY);
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if(curve->enable & DRAW_LCURVE)
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{ gdk_draw_line(d, Closure->drawGC,
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curve->leftX, curve->topLY, curve->leftX, curve->bottomLY);
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}
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->curveColor);
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SetText(curve->layout, curve->leftLabel, &w, &h);
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x = curve->leftX - w/2;
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if(x < 5) x = 5;
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gdk_draw_layout(d, Closure->drawGC,
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x, curve->topY - h - 5, curve->layout);
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/* Draw and label the grid lines for the log curve */
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if(curve->enable & DRAW_LCURVE)
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{ int val;
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char buf[16];
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->logColor);
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SetText(curve->layout, curve->leftLogLabel, &w, &h);
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x = curve->leftX - w/2;
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if(x < 5) x = 5;
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gdk_draw_layout(d, Closure->drawGC,
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x, curve->topLY - h - 5, curve->layout);
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for(val=400; val>3; val/=2)
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{ y = CurveLogY(curve, val);
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sprintf(buf,"%d",val);
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SetText(curve->layout, buf, &w, &h);
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->logColor);
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gdk_draw_layout(d, Closure->drawGC, curve->leftX-9-w, y-h/2, curve->layout);
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->foreground);
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gdk_draw_line(d, Closure->drawGC, curve->leftX-6, y, curve->leftX, y);
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->grid);
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gdk_draw_line(d, Closure->drawGC, curve->leftX, y, curve->rightX, y);
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val /=2;
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y = CurveLogY(curve, val);
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->foreground);
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gdk_draw_line(d, Closure->drawGC, curve->leftX-3, y, curve->leftX, y);
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if(curve->bottomLY-curve->topLY > 8*h)
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{ sprintf(buf,"%d",val);
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SetText(curve->layout, buf, &w, &h);
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->logColor);
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gdk_draw_layout(d, Closure->drawGC, curve->leftX-9-w, y-h/2, curve->layout);
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}
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}
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}
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/* Draw and label the grid lines for the normal curve */
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if(curve->maxY < 20) step = 4;
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else step = 10;
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for(i=0; i<=curve->maxY; i+=step)
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{ char buf[4];
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g_snprintf(buf, 4, curve->leftFormat, i);
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SetText(curve->layout, buf, &w, &h);
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y = yg = CurveY(curve, i);
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->curveColor);
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gdk_draw_layout(d, Closure->drawGC, curve->leftX-9-w, y-h/2, curve->layout);
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->foreground);
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gdk_draw_line(d, Closure->drawGC, curve->leftX-6, y, curve->leftX, y);
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->grid);
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gdk_draw_line(d, Closure->drawGC, curve->leftX, y, curve->rightX, y);
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->foreground);
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y = CurveY(curve, i+step/2);
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if(y >= curve->topY)
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gdk_draw_line(d, Closure->drawGC, curve->leftX-3, y, curve->leftX, y);
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}
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/* Draw the right coordinate axis */
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->foreground);
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gdk_draw_line(d, Closure->drawGC,
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curve->rightX, curve->topY, curve->rightX, curve->bottomY);
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if(curve->enable & DRAW_LCURVE)
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gdk_draw_line(d, Closure->drawGC,
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curve->rightX, curve->topLY, curve->rightX, curve->bottomLY);
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/* Draw and label the bottom coordinate axis */
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->foreground);
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gdk_draw_line(d, Closure->drawGC,
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curve->leftX, curve->bottomY, curve->rightX, curve->bottomY);
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if(curve->enable & DRAW_LCURVE)
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{ gdk_draw_line(d, Closure->drawGC,
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curve->leftX, curve->bottomLY, curve->rightX, curve->bottomLY);
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bottom_y = curve->bottomLY;
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}
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else bottom_y = curve->bottomY;
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if(curve->maxX <= 100) step = 20; /* <100M */
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else if(curve->maxX < 1000) step = 100; /* 100M ... 1000M */
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else if(curve->maxX < 8000) step = 1024; /* 1G .. 8G */
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else if(curve->maxX < 15000) step = 2560; /* 8G .. 15G */
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else if(curve->maxX < 25000) step = 5120; /* 15G .. 25G */
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else step = 10240;
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for(i=0; i<=curve->maxX; i+=step)
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{ char buf[10];
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switch(curve->bottomFormat)
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{ case CURVE_PERCENT:
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g_snprintf(buf, 10, "%d%%", i);
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break;
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case CURVE_MEGABYTES:
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if(step <= 100)
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g_snprintf(buf, 10, "%dM",i);
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else g_snprintf(buf, 10, "%3.1fG",(gdouble)i/1024.0);
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break;
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}
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SetText(curve->layout, buf, &w, &h);
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x = CurveLX(curve,i)-1;
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gdk_draw_line(d, Closure->drawGC, x, bottom_y+6, x, bottom_y);
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gdk_draw_layout(d, Closure->drawGC, x-w/2, bottom_y+8, curve->layout);
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if(i && x < curve->rightX)
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{ gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->grid);
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gdk_draw_line(d, Closure->drawGC, x, curve->bottomY-1, x, yg);
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if(curve->enable & DRAW_LCURVE)
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gdk_draw_line(d, Closure->drawGC, x, curve->bottomLY-1, x, curve->topLY);
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}
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->foreground);
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x = CurveLX(curve,i+step/2)-1;
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if(x < curve->rightX)
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gdk_draw_line(d, Closure->drawGC, x, bottom_y+3, x, bottom_y);
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}
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}
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/*
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* Redraw the curve
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*/
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void RedrawCurve(Curve *curve, int last)
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{ int i,x0,x1,fy0,fy1;
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x0 = CurveX(curve, 0);
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fy0 = CurveY(curve, curve->fvalue[0]);
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gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->curveColor);
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/* Draw the curve */
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for(i=1; i<=last; i++)
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{ x1 = CurveX(curve, i);
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if(curve->enable & DRAW_ICURVE)
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{ int iy = CurveY(curve, curve->ivalue[i]);
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if(curve->ivalue[i] > 0)
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{ gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->barColor);
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gdk_draw_rectangle(curve->widget->window,
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Closure->drawGC, TRUE,
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x0, iy, x0==x1 ? 1 : x1-x0, curve->bottomY-iy);
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}
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}
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if(curve->enable & DRAW_LCURVE)
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{ int iy = CurveLogY(curve, curve->lvalue[i]);
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if(curve->lvalue[i] > 0)
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{ gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->logColor);
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gdk_draw_rectangle(curve->widget->window,
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Closure->drawGC, TRUE,
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x0, iy, x0==x1 ? 1 : x1-x0, curve->bottomLY-iy);
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}
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}
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if(curve->enable & DRAW_FCURVE && curve->fvalue[i] >= 0)
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{ fy1 = CurveY(curve, curve->fvalue[i]);
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if(x0 < x1)
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{ gdk_gc_set_rgb_fg_color(Closure->drawGC, Closure->curveColor);
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gdk_draw_line(curve->widget->window, Closure->drawGC, x0, fy0, x1, fy1);
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fy0 = fy1;
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}
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}
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x0 = x1;
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}
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}
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