4898794edd81be5285ea6e544acbedeaeb31bf78 max Tue Nov 23 08:10:57 2021 -0800 Fixing pointers to README file for license in all source code files. refs #27614 diff --git src/hg/cgilib/hvGfx.c src/hg/cgilib/hvGfx.c index 994beb6..8ea8bec 100644 --- src/hg/cgilib/hvGfx.c +++ src/hg/cgilib/hvGfx.c @@ -1,301 +1,301 @@ /* hvGfx - browser graphics interface. This is a thin layer on top of vGfx * providing genome browser-specific features. It was added to handle * reverse-complement display. */ /* Copyright (C) 2014 The Regents of the University of California - * See README in this or parent directory for licensing information. */ + * See kent/LICENSE or http://genome.ucsc.edu/license/ for licensing information. */ #include "common.h" #include "hvGfx.h" #include "obscure.h" static struct hvGfx *hvGfxAlloc(struct vGfx *vg) /* allocate a hvgGfx object */ { struct hvGfx *hvg; AllocVar(hvg); hvg->vg = vg; hvg->pixelBased = vg->pixelBased; hvg->width = vg->width; hvg->height = vg->height; hvg->clipMaxX = vg->width; hvg->clipMaxY = vg->height; return hvg; } struct hvGfx *hvGfxOpenPng(int width, int height, char *fileName, boolean useTransparency) /* Open up something that we'll write out as a PNG someday. */ { return hvGfxAlloc(vgOpenPng(width, height, fileName, useTransparency)); } struct hvGfx *hvGfxOpenPostScript(int width, int height, char *fileName) /* Open up something that will someday be a PostScript file. */ { return hvGfxAlloc(vgOpenPostScript(width, height, fileName)); } void hvGfxClose(struct hvGfx **pHvg) /* Close down virtual graphics object, and finish writing it to file. */ { struct hvGfx *hvg = *pHvg; if (hvg != NULL) { vgClose(&hvg->vg); freez(pHvg); } } void hvGfxMakeColorGradient(struct hvGfx *hvg, struct rgbColor *start, struct rgbColor *end, int steps, Color *colorIxs) /* Make a color gradient that goes smoothly from start to end colors in given * number of steps. Put indices in color table in colorIxs */ { double scale = 0, invScale; double invStep; int i; int r,g,b; steps -= 1; /* Easier to do the calculation in an inclusive way. */ invStep = 1.0/steps; for (i=0; i<=steps; ++i) { invScale = 1.0 - scale; r = invScale * start->r + scale * end->r; g = invScale * start->g + scale * end->g; b = invScale * start->b + scale * end->b; colorIxs[i] = hvGfxFindColorIx(hvg, r, g, b); scale += invStep; } } static long figureTickSpan(long totalLength, int maxNumTicks) /* Figure out whether ticks on ruler should be 1, 5, 10, 50, 100, 500, * 1000, etc. units apart. */ { int roughTickLen = totalLength/maxNumTicks; int i; int tickLen = 1; for (i=0; i<9; ++i) { if (roughTickLen < tickLen) return tickLen; tickLen *= 5; if (roughTickLen < tickLen) return tickLen; tickLen *= 2; } return 1000000000; } void hvGfxDrawRulerBumpText(struct hvGfx *hvg, int xOff, int yOff, int height, int width, Color color, MgFont *font, int startNum, int range, int bumpX, int bumpY) /* Draw a ruler inside the indicated part of mg with numbers that start at * startNum and span range. Bump text positions slightly. */ { int tickSpan; int tickPos; double scale; int firstTick; int remainder; int end = startNum + range; int x; char tbuf[18]; int numWid; int goodNumTicks; int niceNumTicks = width/35; sprintLongWithCommas(tbuf, startNum+range); numWid = mgFontStringWidth(font, tbuf)+4+bumpX; goodNumTicks = width/numWid; if (goodNumTicks < 1) goodNumTicks = 1; if (goodNumTicks > niceNumTicks) goodNumTicks = niceNumTicks; tickSpan = figureTickSpan(range, goodNumTicks); scale = (double)width / range; firstTick = startNum + tickSpan; remainder = firstTick % tickSpan; firstTick -= remainder; for (tickPos=firstTick; tickPos<end; tickPos += tickSpan) { sprintLongWithCommas(tbuf, tickPos); numWid = mgFontStringWidth(font, tbuf)+4; x = (int)((tickPos-startNum) * scale) + xOff; hvGfxBox(hvg, x, yOff, 1, height, color); if (x - numWid >= xOff) { hvGfxTextCentered(hvg, x-numWid + bumpX, yOff + bumpY, numWid, height, color, font, tbuf); } } } void hvGfxDrawRuler(struct hvGfx *hvg, int xOff, int yOff, int height, int width, Color color, MgFont *font, int startNum, int range) /* Draw a ruler inside the indicated part of mg with numbers that start at * startNum and span range. */ { hvGfxDrawRulerBumpText(hvg, xOff, yOff, height, width, color, font, startNum, range, 0, 0); } void hvGfxBarbedHorizontalLine(struct hvGfx *hvg, int x, int y, int width, int barbHeight, int barbSpacing, int barbDir, Color color, boolean needDrawMiddle) /* Draw a horizontal line starting at xOff, yOff of given width. Will * put barbs (successive arrowheads) to indicate direction of line. * BarbDir of 1 points barbs to right, of -1 points them to left. */ { barbDir = (hvg->rc) ? -barbDir : barbDir; if (barbDir == 0) return; // fully clipped, or no barbs x = hvGfxAdjXW(hvg, x, width); int x1, x2; int yHi, yLo; int offset, startOffset, endOffset, barbAdd; int scrOff = (barbSpacing - 1) - (x % (barbSpacing)); yHi = y + barbHeight; yLo = y - barbHeight; if (barbDir < 0) { startOffset = scrOff - barbHeight; startOffset = (startOffset >= 0) ?startOffset : 0; endOffset = width - barbHeight; barbAdd = barbHeight; } else { startOffset = scrOff + barbHeight; endOffset = width; barbAdd = -barbHeight; } for (offset = startOffset; offset < endOffset; offset += barbSpacing) { x1 = x + offset; x2 = x1 + barbAdd; vgLine(hvg->vg, x1, y, x2, yHi, color); vgLine(hvg->vg, x1, y, x2, yLo, color); } } void hvGfxNextItemButton(struct hvGfx *hvg, int x, int y, int w, int h, Color color, Color hvgColor, boolean nextItem) /* Draw a button that looks like a fast-forward or rewind button on */ /* a remote control. If nextItem is TRUE, it points right, otherwise */ /* left. color is the outline color, and hvgColor is the fill color. */ { x = hvGfxAdjXW(hvg, x, w); if (hvg->rc) nextItem = !nextItem; struct gfxPoly *t1, *t2; /* Make the triangles */ t1 = gfxPolyNew(); t2 = gfxPolyNew(); if (nextItem) /* point right. */ { gfxPolyAddPoint(t1, x, y); gfxPolyAddPoint(t1, x+w/2, y+h/2); gfxPolyAddPoint(t1, x, y+h); gfxPolyAddPoint(t2, x+w/2, y); gfxPolyAddPoint(t2, x+w, y+h/2); gfxPolyAddPoint(t2, x+w/2, y+h); } else /* point left. */ { gfxPolyAddPoint(t1, x, y+h/2); gfxPolyAddPoint(t1, x+w/2, y); gfxPolyAddPoint(t1, x+w/2, y+h); gfxPolyAddPoint(t2, x+w/2, y+h/2); gfxPolyAddPoint(t2, x+w, y); gfxPolyAddPoint(t2, x+w, y+h); } /* The two filled triangles. */ vgDrawPoly(hvg->vg, t1, hvgColor, TRUE); vgDrawPoly(hvg->vg, t2, hvgColor, TRUE); /* The two outline triangles. */ vgDrawPoly(hvg->vg, t1, color, FALSE); vgDrawPoly(hvg->vg, t2, color, FALSE); gfxPolyFree(&t1); gfxPolyFree(&t2); } void hvGfxDottedLine(struct hvGfx *hvg, int x1, int y1, int x2, int y2, Color color, boolean isDash) /* Brezenham line algorithm, alternating dots, by 1 pixel or two (isDash true) */ { int duty_cycle; int incy; int delta_x, delta_y; int dots; int dotFreq = (isDash ? 3 : 2); delta_y = y2-y1; delta_x = x2-x1; if (delta_y < 0) { delta_y = -delta_y; incy = -1; } else { incy = 1; } if (delta_x < 0) { delta_x = -delta_x; incy = -incy; x1 = x2; y1 = y2; } duty_cycle = (delta_x - delta_y)/2; if (delta_x >= delta_y) { dots = delta_x+1; while (--dots >= 0) { if (dots % dotFreq) hvGfxDot(hvg,x1,y1,color); duty_cycle -= delta_y; x1 += 1; if (duty_cycle < 0) { duty_cycle += delta_x; /* update duty cycle */ y1+=incy; } } } else { dots = delta_y+1; while (--dots >= 0) { if (dots % dotFreq) hvGfxDot(hvg,x1,y1,color); duty_cycle += delta_x; y1+=incy; if (duty_cycle > 0) { duty_cycle -= delta_y; /* update duty cycle */ x1 += 1; } } } } void hvGfxSetFontMethod(struct hvGfx *hvg, unsigned int method, char *fontName, char *fontFile) /* Use the Free Type library to draw fonts. */ { vgSetFontMethod(hvg->vg, method, fontName, fontFile); }