forked from 0ad/0ad
janwas
4aa740bff5
- wposix.cpp: initial support for MEM_RESERVE and MEM_COMMIT semantics in mmap - cstr: removed no longer necessary serialization header - xmlutils: wrap new() calls in nommgr/mmgr; allows tracking other allocs in this file. - add u64_from_u32 - various minor comments/improvements. This was SVN commit r2604.
172 lines
4.0 KiB
C++
Executable File
172 lines
4.0 KiB
C++
Executable File
#include "precompiled.h"
|
|
|
|
#include <string.h>
|
|
#include <sstream>
|
|
|
|
// On Windows, allow runtime choice between system cursors and OpenGL
|
|
// cursors (Windows = more responsive, OpenGL = more consistent with what
|
|
// the game sees)
|
|
#define USE_WINDOWS_CURSOR 1
|
|
|
|
#include "lib/ogl.h"
|
|
#include "sysdep/sysdep.h" // sys_cursor_*
|
|
#include "../res.h"
|
|
#include "ogl_tex.h"
|
|
#include "cursor.h"
|
|
|
|
// no init is necessary because this is stored in struct Cursor, which
|
|
// is 0-initialized by h_mgr.
|
|
class GLCursor
|
|
{
|
|
Handle ht;
|
|
int w, h;
|
|
int hotspotx, hotspoty;
|
|
|
|
public:
|
|
void create(Handle ht_, int w_, int h_, int hotspotx_, int hotspoty_)
|
|
{
|
|
ht = ht_;
|
|
w = w_; h = h_;
|
|
hotspotx = hotspotx_; hotspoty = hotspoty_;
|
|
|
|
WARN_ERR(tex_upload(ht, GL_NEAREST));
|
|
}
|
|
|
|
void destroy()
|
|
{
|
|
WARN_ERR(tex_free(ht));
|
|
}
|
|
|
|
void draw(int x, int y)
|
|
{
|
|
WARN_ERR(tex_bind(ht));
|
|
glEnable(GL_TEXTURE_2D);
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
glEnable(GL_BLEND);
|
|
glDisable(GL_DEPTH_TEST);
|
|
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
|
|
|
|
// OpenGL's coordinate system is "upside-down"; correct for that.
|
|
y = g_yres - y;
|
|
|
|
glBegin(GL_QUADS);
|
|
glTexCoord2i(0, 0); glVertex2i( x-hotspotx, y+hotspoty );
|
|
glTexCoord2i(1, 0); glVertex2i( x-hotspotx+w, y+hotspoty );
|
|
glTexCoord2i(1, 1); glVertex2i( x-hotspotx+w, y+hotspoty-h );
|
|
glTexCoord2i(0, 1); glVertex2i( x-hotspotx, y+hotspoty-h );
|
|
glEnd();
|
|
}
|
|
};
|
|
|
|
|
|
struct Cursor
|
|
{
|
|
void* sys_cursor;
|
|
|
|
// valid iff sys_cursor == 0.
|
|
GLCursor gl_cursor;
|
|
};
|
|
|
|
H_TYPE_DEFINE(Cursor);
|
|
|
|
static void Cursor_init(Cursor* UNUSED(c), va_list UNUSED(args))
|
|
{
|
|
}
|
|
|
|
static void Cursor_dtor(Cursor* c)
|
|
{
|
|
if(c->sys_cursor)
|
|
WARN_ERR(sys_cursor_free(c->sys_cursor));
|
|
else
|
|
c->gl_cursor.destroy();
|
|
}
|
|
|
|
static int Cursor_reload(Cursor* c, const char* name, Handle)
|
|
{
|
|
char filename[VFS_MAX_PATH];
|
|
|
|
// Load the .txt file containing the pixel offset of the cursor's
|
|
// hotspot (the bit of it that's drawn at (g_mouse_x,g_mouse_y) )
|
|
snprintf(filename, ARRAY_SIZE(filename), "art/textures/cursors/%s.txt", name);
|
|
int hotspotx = 0, hotspoty = 0;
|
|
{
|
|
void* p; size_t size;
|
|
Handle hm = vfs_load(filename, p, size);
|
|
WARN_ERR(hm);
|
|
if(hm > 0)
|
|
{
|
|
std::stringstream s(std::string((const char*)p, size));
|
|
s >> hotspotx >> hotspoty;
|
|
|
|
WARN_ERR(mem_free_h(hm));
|
|
}
|
|
}
|
|
|
|
snprintf(filename, ARRAY_SIZE(filename), "art/textures/cursors/%s.png", name);
|
|
Handle ht = tex_load(filename);
|
|
RETURN_ERR(ht);
|
|
|
|
int w = 0, h = 0;
|
|
int gl_fmt = 0, bpp = 0;
|
|
void* img = 0;
|
|
WARN_ERR(tex_info(ht, &w, &h, &gl_fmt, &bpp, &img));
|
|
|
|
#if USE_WINDOWS_CURSOR
|
|
// verify texture format (this isn't done in sys_cursor_create to
|
|
// avoid needing to pass gl_fmt and bpp; it assumes 32-bit RGBA).
|
|
if(bpp != 32 || gl_fmt != GL_RGBA)
|
|
debug_warn("Cursor_reload: invalid texture format");
|
|
else
|
|
WARN_ERR(sys_cursor_create(w, h, img, hotspotx, hotspoty, &c->sys_cursor));
|
|
#endif
|
|
|
|
// if the system cursor code is disabled or failed, fall back to GLCursor.
|
|
if(!c->sys_cursor)
|
|
c->gl_cursor.create(ht, w, h, hotspotx, hotspoty);
|
|
|
|
return 0;
|
|
}
|
|
|
|
// note: these standard resource interface functions are not exposed to the
|
|
// caller. all we need here is storage for the sys_cursor / GLCursor and
|
|
// a name -> data lookup mechanism, both provided by h_mgr.
|
|
// in other words, we continually create/free the cursor resource in
|
|
// cursor_draw and trust h_mgr's caching to absorb it.
|
|
|
|
static Handle cursor_load(const char* name)
|
|
{
|
|
return h_alloc(H_Cursor, name, 0);
|
|
}
|
|
|
|
static int cursor_free(Handle& h)
|
|
{
|
|
return h_free(h, H_Cursor);
|
|
}
|
|
|
|
|
|
// draw the specified cursor at the given pixel coordinates
|
|
// (origin is top-left to match the windowing system).
|
|
// uses a hardware mouse cursor where available, otherwise a
|
|
// portable OpenGL implementation.
|
|
int cursor_draw(const char* name, int x, int y)
|
|
{
|
|
// Use 'null' to disable the cursor
|
|
if(!name)
|
|
{
|
|
WARN_ERR(sys_cursor_set(0));
|
|
return 0;
|
|
}
|
|
|
|
Handle hc = cursor_load(name);
|
|
RETURN_ERR(hc);
|
|
H_DEREF(hc, Cursor, c);
|
|
|
|
if(c->sys_cursor)
|
|
WARN_ERR(sys_cursor_set(c->sys_cursor));
|
|
else
|
|
c->gl_cursor.draw(x, y);
|
|
|
|
(void)cursor_free(hc);
|
|
return 0;
|
|
}
|