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Add docmap struct

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We want to have an array of docmaps, one for each file and be able to
iterate through them. That way the layout can be done in a single
function.
This commit is contained in:
Nathan McRae 2023-06-19 22:42:26 -07:00
parent d3e47ee184
commit aade06e600
1 changed files with 270 additions and 204 deletions
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136
src/main.zig
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@ -7,7 +7,27 @@ const c = @cImport({
const assert = @import("std").debug.assert;
const DrawnText = struct {
surface: [*c]c.SDL_Surface,
texture: ?*c.SDL_Texture,
rect: c.SDL_Rect,
};
const FileDocMap = struct {
title_text: DrawnText,
contents: []u8,
};
pub fn main() !void {
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer {
if(gpa.deinit()) {
std.debug.print("Allocator leak\n", .{});
}
}
const allocator = gpa.allocator();
const window_width = 300;
const window_height = 500;
const column_width = 100;
@ -31,12 +51,11 @@ pub fn main() !void {
};
defer c.SDL_DestroyRenderer(renderer);
const source_code = @embedFile("GapProbeScan.cs");
const file_name = "GapProbeScan.cs";
const color_result: c_int = c.SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
if (color_result != 0) {
c.SDL_Log("Unable to set draw color: %d", color_result);
// Turn on anti-aliasing
// :( doesn't seem to work
const aa_result = c.SDL_SetHint(c.SDL_HINT_RENDER_SCALE_QUALITY, "1");
if (aa_result != c.SDL_TRUE) {
c.SDL_Log("Unable to set anti-aliasing: %d", c.SDL_GetError());
return error.SDLInitializationFailed;
}
@ -56,33 +75,82 @@ pub fn main() !void {
};
// TODO: can we embed this file?
const font: ?*c.TTF_Font = c.TTF_OpenFont("FreeSans.ttf", 24);
const font: ?*c.TTF_Font = c.TTF_OpenFont("FreeSans.ttf", 12);
if (font == null) {
const err = c.TTF_GetError();
c.SDL_Log("Unable to load font: %s", err);
return error.TTFFontLoadFailed;
}
const surface: [*c]c.SDL_Surface = c.TTF_RenderText_Solid(font, file_name, text_color);
if (surface == null) {
c.SDL_Log("Unable to render text");
return error.RenderTextFailed;
}
defer c.SDL_FreeSurface(surface);
var file_paths = std.ArrayList([]const u8).init(allocator);
defer file_paths.deinit();
try file_paths.append("GapProbeScan.cs");
try file_paths.append("src/main.zig");
// const file_name = "GapProbeScan.cs";
// const source_code = @embedFile(file_name);
const texture: ?*c.SDL_Texture = c.SDL_CreateTextureFromSurface(renderer, surface);
if (texture == null) {
c.SDL_Log("Unable to create texture from surface");
return error.CreateTextureFailed;
}
defer c.SDL_DestroyTexture(texture);
var file_docmaps = std.ArrayList(FileDocMap).init(allocator);
defer file_docmaps.deinit();
const rect = c.SDL_Rect {
.x = 0,
.y = 0,
.w = surface.*.w,
.h = surface.*.h,
};
for (file_paths.items) |path| {
const surface: [*c]c.SDL_Surface = c.TTF_RenderText_Solid(font, @ptrCast([*c]const u8, path), text_color);
if (surface == null) {
c.SDL_Log("Unable to render text");
return error.RenderTextFailed;
}
const texture: ?*c.SDL_Texture = c.SDL_CreateTextureFromSurface(renderer, surface);
if (texture == null) {
c.SDL_Log("Unable to create texture from surface");
return error.CreateTextureFailed;
}
var rect = c.SDL_Rect {
.x = 0,
.y = 0,
.w = surface.*.w,
.h = surface.*.h,
};
const file = try std.fs.cwd().openFile(path, .{ });
defer file.close();
const stat = try file.stat();
var buffer = try allocator.alloc(u8, stat.size);
const bytes_read = try file.readAll(buffer);
if (bytes_read != stat.size) {
std.debug.print("bytes_read: {any}, stat.size: {any}\n", .{
bytes_read,
stat.size,
});
return error.FileReadError;
}
var docmap = FileDocMap {
.title_text = DrawnText {
.surface = surface,
.texture = texture,
.rect = rect,
},
.contents = buffer,
};
try file_docmaps.append(docmap);
}
defer {
for (file_docmaps.items) |docmap| {
c.SDL_FreeSurface(docmap.title_text.surface);
c.SDL_DestroyTexture(docmap.title_text.texture);
allocator.free(docmap.contents);
}
}
const color_result: c_int = c.SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
if (color_result != 0) {
c.SDL_Log("Unable to set draw color: %d", color_result);
return error.SDLInitializationFailed;
}
// const surface = c.SDL_GetWindowSurface(screen);
@ -119,11 +187,11 @@ pub fn main() !void {
var i: usize = 0;
var column: c_int = 0;
x = 0;
var y: c_int = surface.*.h;
var y: c_int = file_docmaps.items[0].title_text.rect.h;
// white: false, black: true
var color: bool = false;
while (i < source_code.len) : (i += 1) {
if (source_code[i] == 10) {
while (i < file_docmaps.items[0].contents.len) : (i += 1) {
if (file_docmaps.items[0].contents[i] == 10) {
y += 1;
if (y > window_height) {
y = 0;
@ -135,14 +203,14 @@ pub fn main() !void {
continue;
}
if (source_code[i] == 32 and color) {
if (file_docmaps.items[0].contents[i] == 32 and color) {
color = false;
const white_color_result = c.SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
if (white_color_result != 0) {
c.SDL_Log("Unable to set draw color: %d", white_color_result);
return error.SDLInitializationFailed;
}
} else if (source_code[i] != 32 and !color) {
} else if (file_docmaps.items[0].contents[i] != 32 and !color) {
color = true;
const black_color_result = c.SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
if (black_color_result != 0) {
@ -188,12 +256,10 @@ pub fn main() !void {
x += 1;
}
// Display text
if (c.SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255) != 0) {
c.SDL_Log("Unable to set draw color");
}
const text = file_docmaps.items[0].title_text;
if (c.SDL_RenderCopy(renderer, texture, null, &rect) != 0) {
// Display text
if (c.SDL_RenderCopy(renderer, text.texture, null, &(text.rect)) != 0) {
c.SDL_Log("Unable to render copy");
}