From 97e6eca8930a59e8aca0e23faccba3fc43b457fc Mon Sep 17 00:00:00 2001
From: kramm <kramm>
Date: Sun, 21 Jan 2007 18:57:03 +0000
Subject: [PATCH] added keepratio parameter
---
lib/devices/rescale.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 79 insertions(+), 3 deletions(-)
diff --git a/lib/devices/rescale.c b/lib/devices/rescale.c
index 50b3c37..e8943f1 100644
--- a/lib/devices/rescale.c
+++ b/lib/devices/rescale.c
@@ -23,6 +23,7 @@
#include <stdarg.h>
#include <unistd.h>
#include <memory.h>
+#include <math.h>
#include "../types.h"
#include "../mem.h"
#include "../gfxdevice.h"
@@ -30,10 +31,14 @@
typedef struct _internal {
gfxdevice_t*out;
+ int origwidth;
+ int origheight;
int targetwidth;
int targetheight;
+ int centerx, centery;
gfxmatrix_t matrix;
double zoomwidth;
+ int keepratio;
} internal_t;
static int verbose = 1;
@@ -56,8 +61,51 @@ static void dbg(char*format, ...)
fflush(stdout);
}
+char gfxline_isRect(gfxline_t*line)
+{
+ return 1;
+ if(!line)
+ return 0;
+ double x1=line->x,y1=line->x,x2=line->x,y2=line->y;
+ int nx1=0,nx2=0,ny1=0,ny2=0;
+ line = line->next;
+ while(line) {
+ if(line->type != gfx_lineTo)
+ return 0;
+ if(line->x < x1) {
+ x1 = line->x;
+ nx1++;
+ } else if(line->y < y1) {
+ y1 = line->y;
+ ny1++;
+ } else if(line->x > x2) {
+ x2 = line->x;
+ nx2++;
+ } else if(line->y > y1) {
+ y2 = line->y;
+ ny2++;
+ }
+ line = line->next;
+ }
+ return (nx1+nx2)==1 && (ny1+ny2)==1;
+}
+
gfxline_t*transformgfxline(internal_t*i, gfxline_t*line)
{
+ /* special case: transformed rectangle
+ if(gfxline_isRect(line)) {
+ gfxbbox_t bbox = gfxline_getbbox(line);
+ if(fabs(bbox.xmin)<0.1 && fabs(bbox.ymin)<0.1 &&
+ fabs(bbox.ymax-i->origwidth)<0.1 && fabs(bbox.ymax-i->origheight)<0.1) {
+ gfxline_t r[5];
+ r[0].x = 0; r[0].y = 0; r[0].type = gfx_moveTo;r[0].next = &r[1];
+ r[1].x = i->targetwidth;r[1].y = 0; r[1].type = gfx_lineTo;r[1].next = &r[2];
+ r[2].x = i->targetwidth;r[2].y = i->targetheight;r[2].type = gfx_lineTo;r[2].next = &r[3];
+ r[3].x = 0; r[3].y = i->targetheight;r[3].type = gfx_lineTo;r[3].next = &r[4];
+ r[4].x = 0; r[4].y = 0; r[4].type = gfx_lineTo;r[4].next = 0;
+ return gfxline_clone(r);
+ }
+ } */
gfxline_t*line2 = gfxline_clone(line);
gfxline_transform(line2, &i->matrix);
return line2;
@@ -66,14 +114,41 @@ gfxline_t*transformgfxline(internal_t*i, gfxline_t*line)
int rescale_setparameter(gfxdevice_t*dev, const char*key, const char*value)
{
internal_t*i = (internal_t*)dev->internal;
- return i->out->setparameter(i->out,key,value);
+ if(!strcmp(key, "keepratio")) {
+ i->keepratio = atoi(value);
+ return 1;
+ } else return i->out->setparameter(i->out,key,value);
}
void rescale_startpage(gfxdevice_t*dev, int width, int height)
{
internal_t*i = (internal_t*)dev->internal;
- i->matrix.m00 = (double)i->targetwidth / (double)width;
- i->matrix.m11 = (double)i->targetheight / (double)height;
+
+ i->origwidth = width;
+ i->origheight = height;
+
+ if(i->keepratio) {
+ double rx = (double)i->targetwidth / (double)width;
+ double ry = (double)i->targetheight / (double)height;
+ if(rx<ry) {
+ i->matrix.m00 = rx;
+ i->matrix.m11 = rx;
+ i->matrix.tx = 0;
+ if(i->centery) {
+ i->matrix.ty = (i->targetheight - height*rx) / 2;
+ }
+ } else {
+ i->matrix.m00 = ry;
+ i->matrix.m11 = ry;
+ if(i->centerx) {
+ i->matrix.tx = (i->targetwidth - width*ry) / 2;
+ }
+ i->matrix.ty = 0;
+ }
+ } else {
+ i->matrix.m00 = (double)i->targetwidth / (double)width;
+ i->matrix.m11 = (double)i->targetheight / (double)height;
+ }
i->out->startpage(i->out,i->targetwidth,i->targetheight);
}
@@ -188,6 +263,7 @@ void gfxdevice_rescale_init(gfxdevice_t*dev, gfxdevice_t*out, int width, int hei
i->targetwidth = width;
i->targetheight = height;
i->zoomwidth = 1.0;
+ i->centerx = 1;
i->out = out;
}
--
1.7.10.4