diff options
Diffstat (limited to 'src/page.c')
| -rw-r--r-- | src/page.c | 30 |
1 files changed, 26 insertions, 4 deletions
@@ -13,6 +13,8 @@ #include <stdlib.h> #include <string.h> #include <stdio.h> +#include <math.h> + #include <nspdf/page.h> #include "graphics_state.h" @@ -409,14 +411,31 @@ render_operation_f(struct graphics_state *gs, struct nspdf_render_ctx* render_ct return NSPDFERROR_OK; } +static inline nspdferror +scale_stroke_width(float *ctm, float unscaled, float *scaled) +{ + float avscale; + avscale = (fabs(ctm[0]) + fabs(ctm[3])) / 2.0; /* average scale of x and y axis */ + + *scaled = unscaled * avscale; + if (*scaled < 0.1) { + /* printf("sx:%f sy:%f av:%f un:%f sc:%f\n", + ctm[0], ctm[3], avscale, unscaled, *scaled);*/ + *scaled = 0.1; + } + return NSPDFERROR_OK; +} static inline nspdferror render_operation_B(struct graphics_state *gs, struct nspdf_render_ctx* render_ctx) { struct nspdf_style style; style.stroke_type = NSPDF_OP_TYPE_SOLID; - style.stroke_width = gs->param_stack[gs->param_stack_idx].line_width; - gsc_to_device(&gs->param_stack[gs->param_stack_idx].stroke.colour, &style.stroke_colour); + scale_stroke_width(gs->param_stack[gs->param_stack_idx].ctm, + gs->param_stack[gs->param_stack_idx].line_width, + &style.stroke_width); + gsc_to_device(&gs->param_stack[gs->param_stack_idx].stroke.colour, + &style.stroke_colour); style.fill_type = NSPDF_OP_TYPE_SOLID; gsc_to_device(&gs->param_stack[gs->param_stack_idx].other.colour, &style.fill_colour); @@ -441,8 +460,11 @@ render_operation_S(struct graphics_state *gs, struct nspdf_render_ctx* render_ct style.fill_colour = 0x01000000; style.stroke_type = NSPDF_OP_TYPE_SOLID; - style.stroke_width = gs->param_stack[gs->param_stack_idx].line_width; - gsc_to_device(&gs->param_stack[gs->param_stack_idx].stroke.colour, &style.stroke_colour); + scale_stroke_width(gs->param_stack[gs->param_stack_idx].ctm, + gs->param_stack[gs->param_stack_idx].line_width, + &style.stroke_width); + gsc_to_device(&gs->param_stack[gs->param_stack_idx].stroke.colour, + &style.stroke_colour); render_ctx->path(&style, gs->path, |