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[client] add SVG loading support and use icons for status display

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This brings nanosvg into the project for SVG loading and rendering.
Unfortunatly we can not at this time use a submodule for this project
until https://github.com/memononen/nanosvg/pull/214 is merged.
This commit is contained in:
Geoffrey McRae
2022-05-26 04:08:22 +10:00
parent 8aa36144dc
commit 8974ae4fb5
19 changed files with 4947 additions and 92 deletions
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95
client/src/overlay_utils.c
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@@ -26,6 +26,11 @@
#include "cimgui.h"
#include "main.h"
#define NANOSVG_IMPLEMENTATION
#define NANOSVG_ALL_COLOR_KEYWORDS
#define NANOSVGRAST_IMPLEMENTATION
#include "nanosvgrast.h"
void overlayGetImGuiRect(struct Rect * rect)
{
ImVec2 size;
@@ -78,3 +83,93 @@ void overlayTextMaybeURL(const char * text, bool wrapped)
else
igText(text);
}
bool overlayLoadSVG(const char * data, unsigned int size, OverlayImage * image,
int width, int height)
{
image->tex = NULL;
//nsvgParse alters the data, we need to make a copy and null terminate it
char * svg = malloc(size + 1);
if (!svg)
{
DEBUG_ERROR("out of ram");
goto err;
}
memcpy(svg, data, size);
svg[size] = 0;
NSVGimage * nvi = nsvgParse(svg, "px", 96.0);
if (!nvi)
{
free(svg);
DEBUG_ERROR("nvsgParseFromData failed");
goto err;
}
free(svg);
NSVGrasterizer * rast = nsvgCreateRasterizer();
if (!rast)
{
DEBUG_ERROR("nsvgCreateRasterizer failed");
goto err_image;
}
double srcAspect = nvi->width / nvi->height;
double dstAspect = (double)width / (double)height;
float scale;
if (dstAspect > srcAspect)
{
image->width = (double)height * srcAspect;
image->height = height;
scale = (float)image->width / nvi->width;
}
else
{
image->width = width;
image->height = (double)width / srcAspect;
scale = (float)image->height / nvi->height;
}
uint8_t * img = malloc(image->width * image->height * 4);
if (!img)
{
DEBUG_ERROR("out of ram");
goto err_rast;
}
nsvgRasterize(rast, nvi,
0.0f, 0.0f,
scale,
img,
image->width,
image->height,
image->width * 4);
image->tex = RENDERER(createTexture, image->width, image->height, img);
free(img);
if (!image->tex)
{
DEBUG_ERROR("renderer failed to create the texture");
goto err_rast;
}
err_rast:
nsvgDeleteRasterizer(rast);
err_image:
nsvgDelete(nvi);
err:
return image->tex != NULL;
}
void overlayFreeImage(OverlayImage * image)
{
if (!image->tex)
return;
RENDERER(freeTexture, image->tex);
}